When Marcus was a child, he would play catch with his father. Marcus did not know that his father worked for Dats, and was tasked to look for the Digital World. Marcus was a also taught to ride a bike, but hit his head in the process. Which resulted for him to cry, but his father told him that everyone fails on the first try. Spencer would also let Marcus keeps a bug as long as he didn't tell Sarah about it. When his father was leaving for the Digital World, Marcus waved goodbye to him and told him to come back soon. He waved back to son as he was walking off with his comrades.
The legacy of Dr. Spencer Damon is felt throughout the series, even though he does not appear in it personally at first. When the group was forced to escape back to the human world, he was left behind, and for a while, it was unknown what happened to him. That is, until the answers were revealed by the Digimon called Merukimon. Merukimon say that Spencer had remained back in the Digital World in order to seek out the "god" of the Digital World named King Drasil. Before that, however, he created the Data Link Digivice, and sent the data for it to the human world along with Kudamon and Kamemon. After making a deal with Merukimon to preserve the peace of both worlds, he departed. On his journey, he saved ElDradimon and the Sacred City from sinking in the sand. Over time, he was joined in his search by BanchoLeomon until they found Yggdrasill.
Digimon Data Squad (Anime)
The DATS arrive at Dr. Crier's home, but Keenan runs away in shock and denial at the sight of his human mother. Drowned in his sorrowful thoughts, Keenan recalls his memories of Frigimon's death, which bring him grief. At the Crier's home, the Professor explains that his wife, Michelle, went into shock and a partially catatonic state after the search for Keenan in the Digital World confirmed his disappearance. Suddenly, an anomalous thunderstorm strikes the house, causing the digital gate to open up, and Hagurumon comes from it. He immediately takes over the house and transforms it into a bizarre, toy-robot-like creature with Michelle trapped inside.
Kurata's true ambition is the total annihilation of the Digimon race, making it come about with the aid of his artificially made puppet Digimon Gizumon AT. The DATS and their Digimon partners fight back to no avail; however, Marcus refuses to give up. Fed up with Marcus' stubbornness, Kurata evolves Gizumon into its Ultimate form, Gizumon XT, to finish the DATS. As a dying act of courage, Merukimon sacrifices himself to teach Keenan that a world where humans' and Digimons' hearts become one is possible. Taking Merukimon's words and the happy memories spent with Marcus and the others to heart, Keenan's DNA explodes, allowing Falcomon to access his Ultimate digivolution, Crowmon.
The DATS team returns to the real world, only to find that Sampson and the others are missing. Chief Hashiba surrounds them and dismisses them from DATS, since Kurata lied to the government, and the memories of Marcus, Thomas, and Yoshi are erased. The Digimon are held captive in a jail cell. The rest of the team are also in cells. Marcus, Thomas, and Yoshi live a normal life, until the Digimon escape and persuade them that they used to be a team. Marcus and the others don't believe this at first, but later regain their memories. Meanwhile, Keenan and the others escape from the cells and try to destroy Kurata, but to no avail. They group together again to defeat another Gizumon that Kurata had sent to attack Marcus. Afterwards, they head over to DATS headquarters to find that it's being destroyed.
With DATS HQ destroyed and Kurata on his way to the Digital World, the DATS seek out Dr. Crier to ask him to reactivate his digital gate. When they go through, they end up running into Kurata's henchmen: Kouki, Nanami, and Ivan. When their Bio Digimon forms prove too powerful for the DATS to handle, Sampson and Kudamon appear to help out.
The gang appears in the Digital World and head towards Cherrymon's forest for an information gathering. However, a swarm of Gizumon XT appear and overwhelm them. But the DATS members are saved by BanchoLeomon. He tells the group to "Search for power" and disappears. When they reach Cherrymon's forest, Kouki, Nanami, and Ivan attack.
Searching for Dr. Spencer Damon in hopes he can repair their Data Link Digivices, the Data Squad members stumble upon a gym where BanchoLeomon separates the humans from their Digimon partners to train them on the use of their D.N.A. Charges. However, Kouki, Nanami, and Ivan attack the Digimon in the mean time, while they are unable to advance past the Rookie level. Marcus, Thomas, and Yoshi must master their D.N.A. Charges in time to rescue their Digimon from destruction.
The DATS arrive at the Holy Capital, but once inside are quickly captured and placed in an arena for execution. There, they meet once again with an old acquaintance who they thought missing. Thankfully, the moment that Marcus displays his DNA, the Digimon set them free, as they realize Marcus is Spencer Damon's son who all remember him for his heroic deeds to them. Unfortunately, celebrations are short-lived when a squad of Gizumon comes to raid the city, but catastrophe is prevented thanks to the timely arrival of Keenan and Falcomon who return with allies.
Both the DATS and the inhabitants of the Holy Capital are preparing for the impending battle. When news arrive that Kurata's camp has been discovered, Marcus takes the initiative to strike a head on assault, but Thomas disagrees since it may be a trap. However, Thomas feels underappreciated witnessing how all the Digimon support Marcus. The forces split with Marcus and Keenan going to engage Kurata while Yoshi and Thomas stay to protect the city. Nanami bio hybrid digivolves into BioLotusmon and makes her presence known to Thomas, seducing him in order to make him go astray from his mission.
Nanami managed to accomplish to drain all the water in the lake, where ElDoradimon rests, drained thus preventing any means of mobility to the Holy Capital. With the fortress's defenses down, Ivan directs a frontal assault but is soon detained by Yoshi and Rosemon. However, the two of them are in for a surprise when they witness that Ivan can bio hybrid digivolve further into BioSpinomon.
By incapacitating ElDoradimons' movements, Kurata opened up a massive digital gate that sucks the titanic Digimon along with all his inhabitants to realise into the human world. Once more in the human world, Kouki challenges both Marcus and Agumon for a final showdown to determine the stronger fighter between both. Kouki surprises them by bio-digivolving into BioDarkDramon. Meanwhile, the other DATS and the Digimon citizens are busy fending off the Holy Capital from the intruding Gizumon. However, Kurata again outsmarts his foes ordering the Gizumon to initiate operation Digital Hazard.
ElDradimon was annihilated by Kurata's Gizumon Javelin, and to complicate matters more, Thomas and Gaomon have mysteriously vanished. In fact, Thomas returned to his estranged father and sister, Relena, but the welcome is cold when Thomas' father presents his benefactor none other than Kurata. In exchange for treating Relena's illness, Kurata "persuades" Thomas to seal an agreement. The remaining DATS are desperately searching for any Digimon survivors, until Thomas appears and much to Marcus' shock and dismay, Thomas orders MirageGaogamon to fight against ShineGreymon.
Because Thomas has pledged allegiance to Kurata, Marcus' fueled with a feeling of deep rage in his heart to destroy his opponent at any cost that causes him to invoke a Dark-DNA Charge triggering on ShineGreymon to digivolve into Ruin Mode. Fortunately, Kristy arrives to stop Marcus, and he sees the error of his ways but is too late to stop ShineGreymon's rampage. Feeling hopeless, Marcus sheds tears streaming onto his digivice causing ShineGreymon to come into his senses and revert back to a digi-egg.
Kurata unleashes Belphemon on the city, causing Yoshi, Keenan, Miki, and Megumi to confront him. Thomas double-crosses Kurata, forcing him to become a pure DNA, and fires himself at Belphemon, who in turn transforms into Rage Mode. As Marcus races off with Agumon's Digi-egg in hand, can he make it time to assist the others?
The DATS team continues the fight against Kurata, who has merged himself with Belphemon Rage Mode, but the battle is going badly. From inside Belphemon, Kurata sneers and tells DATS that Digimon are lifeless bits of data without hearts or feelings. This enrages Keenan, and unlocks the power of his DNA charge. Falcomon digivolves to his Mega form Ravemon, but it is still not enough to stop Belphemon, whose true instincts emerge. Meanwhile, Marcus arrives with Agumon's Digi-egg and watches helplessly as his friends fight on. As Marcus watches helplessly, Belphemon regained his control over his body and attacks in a fury. He shoots straight at Marcus with his attack, only to be protected from the attack by Keenan and Ravemon who are badly injured by the attack. After this Marcus gains frustration at his friends getting hurt and Agumon decides to come in with a dramatic entrance.
To everyone's shock Kurata is well alive within Belphemon, who proceeds to show his utter contempt for Marcus, Spencer and the entire Damon family. Marcus calls Kurata lame and pathetic, who then in complete fury, has the demon lord absorb all the electricity of the city, vowing to destroy Marcus. He then swallows the space-oscillation bombs to open a space rift. Thomas alerts everyone that Kurata intends to blow up both the human and digital worlds. Everything seems hopeless for the DATS, but Marcus' words rekindle their spirits, that regardless of being human or Digimon everybody present is the DATS team who fight to protect their loved ones. The team then attacks with all they've got but even ShineGreymon's Glorious Burst which is stronger than ever is unable to put down Belphemon. Belphemon knocks each of the DATS Digimon aside causing BishopChessmon and RookChessmon to revert to their rookie forms of Pawnchessmon respectively. He fires an attack at Marcus which he is shielded from by MirageGaogamon, Ravemon and Rosemon but who are ultimately blown back. Seeing his Digimon friends protecting him, he becomes determined to defeat Kurata and Belphemon, once and for all. This determination dawns upon Marcus and ShineGreymon the miraculous digivolution of Burst Mode. They manage to destroy Belphemon, ignoring Kurata's pleas for mercy. However Kurata sets off an explosion and opens the digital gate even larger. He apparently sets the gate too wide and blows himself up. The Digital World and the Human World are starting to collide.
Craniamon is briefed by King Drasil about all the events that occurred up to now while Marcus and the others protect the citizens from the onslaught of lightning from the Digital World. In addition, BanchoLeomon makes the ultimate sacrifice...
As Marcus and the others make their way to the Digital World, they end up crashing into a shoreline. To their surprise, they find Gotsumon there, reborn and without his old memories. Gotsumon agrees to lead them to King Drasil, but along the way, they are attacked by Craniamon. He easily defeated ShineGreymon, Mirage Gaogamon, Ravemon, and Rosemon, showing them how powerful a Royal Knight is. ShineGreymon then evolved into his Burst Mode, but Gallantmon and the other Royal Knights show up and defeat him. King Drasil reveals himself, but Marcus, determined to not give up, throws a punch at him, only to find the shock of King Drasil's true identity: his own father, Spencer Damon.
The DATS team arrives back in the human world, thanks to Sleipmon, who is none other than Commander Sampson's Kudamon. Gallantmon attacks the human world and makes short work of MirageGaogamon, Rosemon, Ravemon, RookChessmon, and BishopChessmon. Even armed with the Geo Grey Sword, ShineGreymon proves no match for the Royal Knight either. It is then that a badly injured Kentaurusmon challenges Gallantmon, but at what cost?
In order to learn Spencer's true intentions, Marcus and ShineGreymon head once again to the Digital World. However, Thomas and the others stay in the human world to fend off the Royal Knights' ongoing attack with LoadKnightmon this time directing the assault. In the battle, Mirage Gaogamon can't even touch the Royal Knight. Thomas must reconcile himself with his past in order to digivolve Mirage Gaogamon into his Burst Form.
Biyomon returns to the Damon household with numerous Fresh and In-Training Digimon in tow. Yoshi and Keenan help out in taking care of them, despite all of the headache-inducing antics of the childish Digimon. Leopardmon, under the orders of King Drasil, attacks the real world nearby the Damon household. Rosemon and Ravemon do their best to stop the Royal Knight but fail. However, both go through Burst Digivolution and defeat Leopardmon once and for all.
On their way to the Digital World's Mystic Tree where King Drasil resides, Marcus and Agumon are intercepted by Craniamon. He challenges Marcus to one last match, calling forth his true power in the form of his "Omni Shield," a defense mechanism that cannot be broken. As ShineGreymon Burst Mode and Marcus lay powerless to stop Craniammon, he is about to deal the final blow, the other DATS and their Digimon come to save them and join in the fight. They destroy Craniamon's shield by Marcus using his "human potential". Marcus proves to Craniamon that humans really do have potential. Craniamon lets them pass, knowing now that King Drasil's decision might not be the best one.
The DATS team climb King Drasil's headquarters, confronting odd crystals that repel their attacks. Leaving the others behind, Marcus, Agumon, and Gotsumon confront King Drasil. Meanwhile, Craniamon heads to the real world and confronts Garudamon and Kristy, who end up helping him out. Back in the Digital World, Marcus confronts King Drasil but is repelled by a force field. It is then that through the revelation of all his friends supporting him, Marcus overpowers King Drasil. Just as King Drasil lies defeated, Marcus tries to approach it but is interrupted by the sudden arrival of an old friend. With a twist of fate, BanchoLeomon was freed from the stone hold up, but Craniamon took its place. Then the most surprising news of all comes: King Drasil is just impersonating his father, BanchoLeomon is Marcus's father!
Craniamon freed BanchoLeomon and took over his place to hold the Digital World from falling onto the Human world. It is BanchoLeomon who stops Marcus from getting closer to King Drasil and reveals the stunning truth that it is in fact Spencer in the Digimon's body while his body is taken over by King Drasil. Spencer-BanchoLeomon tells the DATS team how during his past exploits in the Digital World, he met BanchoLeomon, both who become friends with their fists, and the truth about King Drasil's intentions because of Kurata's cruel actions. But King Drasil won't go down easily, so Spencer-BanchoLeomon holds him in place and asks Marcus to sacrifice him along with King Drasil to save the Human world. Marcus does so. Although it turns out that Spencer-BanchoLeomon's sacrifice was in vain, as King Drasil reappears in his true form.
After BanchoLeomon and Spencer's destruction, King Drasil changes to a fighting mode and heads to the Real World to eliminate it. The DATS team follows and engages it in a furious clash, but King Drasil easily overpowers them all even at their Burst Digivolution stages. Fueled by their strong bond to protect their beloved ones, regardless of being Human or Digimon, the DATS all together rise their DNAs into the sky with a cry that is answered by the rest of the Digimon on earth and the Royal Knights. The Royal Knights rebel against King Drasil after doubting the motives of their god. In a shocking twist, King Drasil discloses that it is the computer which designs and controls all lifeforms in the Digital World at its will. Suddenly, he starts turning all the Digimon to digi-eggs. Then the Royal Knights try to help Craniamon hold up the Digital World. Everyone is about to go into the hardest battle they will face.
Adults, children, and Digimon all over town invoke the light of their DNA to answer DATS' plea for help. When the hearts of all humans and Digimon become one, Marcus and Agumon activate Burst Mode and are able to deal the decisive punch to defeat King Drasil. King Drasil concedes defeat, acknowledging that humans and Digimon hold potential for growth as long as both stand together. The collision between both worlds stops thanks to the combined power of the DNA charges of everyone. All DATS are reunited with their loved ones in celebration. Marcus and Kristy's happiness bursts out when Spencer returns to them. But not all is joy, as the Digimon must return to help rebuild the Digital World. The news, which dismays Marcus (making him upset to the point of being angry) because he wants Agumon to not part ways from him. Each of the DATS Digimon spend their last day on Earth together with their human partners. As the day of the parting comes, Marcus arrives in a rush telling Agumon he's coming with him to the Digital World. Five years later, Kristy and Keenan attend middle school together and Thomas received the Nobel Prize for curing Relena's illness. Yoshi has become a police officer along with Megumi, Miki and Commander Sampson (who is their commanding officer). Yoshi pulls Kouki over for speeding while Yushima is fishing. Marcus and Agumon have become the peacemakers of the Digital World.
- Japanese : Hozumi Goda
- English : Jeff Nimoy
all information on Spencer Damon came from http://digimon.wikia.com/wiki/Spencer_Damon