|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|
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|
King Xarion had the apearance of an old man. He has white hair and was partly bald. He worn a red coat with fur and 3 golden cross on each side. He also worn a green shirt and black pants.
In his King Viktor form, he has robotic parts that are silver on his chest. His scars are shades of purple. His eyes are now red red too. He still wears black pants along with a silver belt, small helmet, completely bald head, and silver shoes.
His human form in Omniverse was shown to be the same except his hair is longer and has a crocked noise
At first glance King Xarion seems like a kind and gentle king who cares about his kingdom and seeks peaceful methods. However, his true personality has been shown to be cruel and heartless tyrant who would crush anyone who stands in his way. He also has no love for his son, Prince Gyula, and he tried to murder him upon being reborn as King Viktor.
Ben 10: Ultimate AlienIn Viktor: The Spoils, King Xarion 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.
King Xarion was later beaten by Ben, Gwen, and Kevin but 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: Omniverse
Ben 10: Ultimate Alien
- Viktor: The Spoils (first appearance)
Ben 10: Omniverse
- Rad Monster Party (first re-appearance; flashback; death)