Sonic the Hedgehog
Sonic the Hedgehog is a denizen of the World of Mobius. I think. I'm not to up on Cannon STH, so :P. Anyhow, he's the friend/mentor/teacher/supposed yiffer of Tails. His first appearance was in ep 3.
Miles 'Tails' Prower
Tails is from the same world as Sonic, and is supposed to be the yiffiest thing on two legs. NOT IN THIS COMIC. Here, Tails is a bit too young to be yiffy. Cute, Kawaii, and Snuggly as hell, yes. Yiffy, no. He's also the one of the few people in the comic that has some commen sense. He sorta first appeared in ep 1, as my avatar as KawaiiMageTails (^_^)
Megaman X
Megaman X, Rockman, ETC. I liked the game, I love the sprites. ;) Anyhow, he's a paranoid robot from his MMX universe, and he rightly so: I like him, he's my 'chosen' character. You wanna know what it means to be a 'chosen' thing of a god? Look at the history of the Jews, there you go.
Fox McCloud
Star of the Comic, Fox McCloud comes from the Lylat system. He first appeared in ep 2, before the story actually started. BWHAHAAAHAHAHAHAHAHAHAHA!