Antonio

Antonio is a large grey hulking brute with little intelligence and boyfriend to Ben and Gwen's cousin Sunny. He is quite overprotective of Sunny.

Appearance
He looks like a brutish troll with elf like ears, long hair, and bushy eye brows and wear a black brief. He has some minor similarities with Humungousaur (ironic since the two fought). Both are huge, bulky and very strong.

Ultimate Alien
After Sunny was sent to Earth to live with her cousins for the summer (because of her relationship with Antonio, who apparently has a record), Antonio followed her eventually causing the two to go on a night on the town, with himself as their mode of transportation. Sunny immediately rescheduled their plans when Sunny learned that there were more dimension 12 robots they could smash at a particle accelerator, which the robots had taken over to enhance a fusion bomb they had in their possession. With Sunny and Antonio's help they were easily able to defeat the robots however Antonio nearly set off the bomb when he mistook for one of the robots and thus began trying to smash it. When Gwen decided to send Sunny home, both Sunny and Antonio immediately began fighting the team, while Gwen fought Sunny, Antonio fought Ben as Humungousaur, when he proved stronger than even Humungousaur, Ben went Ultimate Humungousaur. Ben was able to trick Antonio into electrocuting himself when he tore out a flood light, which was on and thus electrocuted Antonio. After the fight, Antonio was taken back to his home world by Verdona Tennyson to allow his parents to decide on his punishment.

Trivia

 * Antonio often says he fights for love.
 * He is also quite unintelligent similar to Andreas in Escape From Agreggor.
 * Ironically, despite being described as a bad influence for Sunny, it's seen that he actually is the lesser of two evils.
 * Despite being dim-witted, Antonio was strong enough to easily destroy robots from dimension 12 and physically overpower Humungousaur, this makes him one of Ben's most powerful enemies.
 * He looks like the vreedle brothers but more wild.