Aggregor has standard Osmosian powers. He has the ability of absorption, able to absorb matter, energy, power and DNA. This Aggregor is better at absorbing energy than the canon version, able to absorb an electric blast. However, it still hurt to absorb it. He has vast knowledge in the histories of myths and legends.
He does not wield his spear from the canon series.
Upon absorbing the Andromeda aliens, he became Ultimate Aggregor, gaining the powers of those aliens.
Sometime before his first appearance, he was captured by Dr. Eggman, who planned to use him as an energy source. When this ship Aggregor was on went over Earth, John Smith shot it out of the sky, allowing Aggregor to escape. Suffering from malnutrition, he absorbs and kills a human to be revived. John, Gwen and Kevin attack him, Kevin freaked that there was another Osmosian. Aggregor is losing, and faked his death in a grenade explosion.
Aggregor managed to get a Plumber craft, working on fixing it. Once he did, he secretly went to Tibet to free Dr. Animo from prison, requiring his help. Animo agrees to create genetically altered clones of John's aliens, but has little success in the beginning. Animo recruits Hex, while Aggregor continues to work on an absorption device. Animo and Hex successfully create the clones, and Aggregor has them make the Andromeda aliens. Aggregor then has them distract John's team as they approach.
Aggregor is revealed to be working at Los Soledad, where he absorbs the Andromeda aliens, becoming Ultimate Aggregor. He then begins his quest to get the Map of Infinity. Tricking John's team to do most of the work, he gets them from Mykdl'dy, Piscciss, Ledgerdomain and the Perplexahedron. He then makes it to the Forge of Creation, to absorb a baby Celestialsapien. He fights John's team again, defeating them. He begins to absorb the baby, when John turns into Clockwork, and ages the baby until it gained multiple personalities. Aggregor is consumed by the power, and goes motionless, having gained the multiple personalities. He is then arrested.
He later returns, the Celestialsapien DNA finally dispersing through his body. He goes to the planet Solaris, to obtain Iblis, which is sealed away inside Princess Elise. He successfully captures her, but she's rescued by John from the train he was on. The train crashes and explodes, killing him. However, time is reversed to before his breakout from jail, in which he does so again. John's team is sent after him again, but it wasn't revealed whether they captured him or not.
Aggregor is revealed to have been locked back in Incarcecon, when Intellectuary frees him. Aggregor tries to kill him by absorbing him, but there was no life force to absorb. Aggregor is put in charge of an attack on Augstaka with Vulkanus and P'andor, as he absorbed P'andor's radiation. John manages to defeat him, and the Highbreed take him into custody. However, Intellectuary irradiates the planet, killing the unprotected Aggregor.
Aggregor in this series is 100% human. He is a researcher of Shinra, working directly for Dr. Animo. He goes around the continents searching for John's alien forms that are running around. On his body is a series of tubes that harness electricity, and electric aliens in it. This allows him to use electric blasts, as well as power his spear. He is killed after being framed for President Michael.
Aggregor is an artificially created Osmosian created Proctor Servantis, in the hopes that he would be able to replace Jane Smith. However, Aggregor's powers and body became unstable, deeming him a failure. He is used to help bring Janezarro back to life.
Volug helps him escape after this, however bringing Janezarro to life accelerated the break down of his body. He goes mad, and tries to absorb Jane to fix himself. He gains an Omnitrix mutation, becoming a combo of almost all the aliens in the Omnitrix. He is defeated, then his body completely breaks down.