Joker

Joker is a Quinly for the planet Arkom in Ben 10: Alien Alliance. He appears for the first time in the episode: The man who laughs. Ben was trapped in this deranged lunatic for the rest of the episode. He also appears in Fred 40.

Physical appearance
Joker is a humanoid alien with the same height of a human. He has green eyes and his color is black and white. His appearance is similar to harlequin. He doesn't seem to have hands but smoke instead. The Ultimatrix-Symbol is on his chest.

Powers and Abilities
Joker have the strange ability: He can change the smoke from his sleeves. He can change the density of his hands, it can change in claws, swords, even working guns. He's also very quick and agile.

Weaknesses
Joker just likes jokes but don't really know where limit is and is there for also a very dagerous ally. But the more Ben uses him, he gets better control over the black alien.

Season 1

 * The man who laughs (First Appearance)
 * Joyride
 * Better World?
 * Two of a Kind
 * Dragon Wars Part 3: No Man's Land

Season 2

 * Blightness

Specials

 * Kurt 10: Alien Alliance