|Species|| Human (originally)|
Transylian (upon inhabiting the body of Dr. Viktor)
|Affiliations|| King Viktor (himself)|
|Occupation(s)|| King of Zarcovia|
|Powers and Abilities|
|Abilities|| Enhanced Strength (as King Viktor)|
Enhanced Durability (as King Viktor)
Electrokinesis (as King Viktor)
Technokinesis (as King Viktor)
Sharp Reflexes (as King Viktor)
|Relatives||Prince Gyula (son)|
|Alias|| King Xarion|
King Viktor (after obtaining the body of Dr. Viktor)
Feeble Old Man (by his son)
King Viktor (after transfering his mind into Dr. Viktor's body)
|Voice Actor||Peter Stormare|
|First Appearance||Viktor: The Spoils|
Ultimate AlienHe contacted Ben Tennyson to help him to stop his son Prince Gyula from using the brain-dead body of Dr. Viktor. After Ben and his team were defeated, he was overthrown by his son and thrown into the dungeon. Gwen then let him go, but he betrayed her and kidnapped Ben for experimentation. He did when his son shut off his machine's power as he was hooked up to a mind-transfer device, albeit simply transferring his mind to Dr. Viktor's body, making him King Viktor.
He was later beaten by Ben, Gwen, and Kevin but due could not be arrested seeing as actions within that country undertaken by humans are regarded as out of Plumber jurisdiction (regardless of the fact that Xarion had been inhabiting an alien criminal's body).
Ben 10: Ultimate Alien
- Viktor: The Spoils (first appearance)
- King Xarion is voiced by veteran Swedish American actor Peter Stormare of the Coen Brothers films Fargo, The Big Lebowski, the Jurassic Park sequel The Lost World: Jurassic Park and the 2009 Dennis Quaid thriller Horsemen.