Ssserpent

Ssserpent is a villain in Ben 10: Alien Force. He referred himself as "The Snake that Walks Like a Man"(although he didn't have any feet to be able to walk(he slithers, he just does it upright).

Not much is known about his background except that he is half man, half cobra. He has snake venom like a normal snake does. He appears to be very slimy and have snake-headed hands. He so far appears to be one of Ben's weakest enemies, but was able to hold his own against Gwen and Kevin. He is similar to a Naga.

Ben 10: Alien Force
Ssserpent first appeared in Vengeance of Vilgax: Part 1. He proved to be tough for even Gwen and Kevin only to be easily defeated by the arrival of Ben as Cannonbolt.

Ben 10: Ultimate Alien
He reappeared again in the Ben 10: Ultimate Alien episode Video Games as the secondary villain. Ssserpent says that he escaped from the Null Void Prison and he tries to fight Ben Tennyson only to be crushed by two cars that Four Arms used and turned Serpent into a car sandwich. Ssserpent also reveals he wants to eat Ben as he said "you will do well for my eavning snack." This may mean(since Ben was Four Arms) Ssserpent may be able to unhinge his jaws like a real snake.

Ben 10: Alien Force

 * Vengeance of Vilgax: Part 1

Ben 10: Ultimate Alien

 * Video Games

Trivia

 * Ssserpent so far is only defeated by two of Ben's original alien forms; Cannonbolt in Vengeance of Vilgax: Part 1 and Four Arms in Video Games.
 * It is confirmed by McDuffie that his name is 'Ssserpent'(with 3 S's, not one).
 * The alien Snakepit(mentioned only in the episode Ken 10) is thought to be of Ssserpent's species, but this is not confirmed and most likely never will be.