Frank

Frank is Mr. Poopybutthole's evil cousin who first appears in Episode 34. Why that episode? Well, you'll have to find out!

He's Kyle's sentient dildo. His power level is somewhat higher than the Yakuza, but he's still a really weak villain. As a result, he is easily overpowered by other characters, as he is quite literally an anthropomorphic weenie. He is frequently (and violently) eaten by other characters in Skullgirls, including but not limited to:

• Chum Chum
• Poop Chungus
• Incredible Gassy
• Crazy Spongebob
• Oz
• Oz's Mum
• Umbrella
• Your Mum!
• Kyle
• EDP445
• Shutterstock Hatsune Miku
• Lord Stupid IV
• Billy Bob Tanley
• Professor E. Gagg
• Ruthless Boy
• Likely more we don't know about yet.

Vivian is his waifu.

He fucking hates Poop Chungus and has successfully gotten him killed multiple times. The hatred between the two is mutual.

Other than that, very little is known about him.