Sounds like a great idea. I'd love to help! >:U
I'd be happy to contribute a comic strip or two when time allows. School's kind of scary right now, but I always find time for art.
Anywho: Onto shameless 2 second pet-profiles.
Creatu Name: Wehrmacht (ver-mackt)
Nickname: Wehr - Feel free to just call him this, it's a lot easier to spell.
Creatu Species: Albino Valabex
Picture Of Creatu: Use your imagination! >:C (just kidding, I'll put something here as soon as I get the chance.)
Personality: Wehr is a bully. Overly-emotional and mean-spirited, he picks on smaller creatu to build his own self-esteem. Because of this he is almost always alone, reading books or locked away in the basement looking for things to steal. His social inaptitude is to the point of comical, going so far as to follow people around and shout insults at them for little or no reason. No one ever takes his threats of world-domination seriously, and he's often pushed around by the older creatu because of his awkwardness and outlandish statements.
Any relationships with another character?: Older brother of Polak (see below). Polak is often the target of all Wehr's frustration and anger, though he's learned to live with it.
NOTE: Because I am poor, Wehr's profile says he is a girl for now, until I can afford a gender pendant. Please, know that he is male. xDD
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Creatu Name: Polak (Pole-ack)
Nickname: His brother often refers to him as "Polski"... And Polak hates that.
Creatu Species: Black Zenirix
Picture Of Creatu: (Again, I'll get something up here soon.)
Personality: Polak is a down-to-earth kind of guy. He works hard, almost as though to compensate for his older brother's lack of responsibility. Because he's the youngest in a large family, he's learned to be resourceful and independent. He keeps to himself, but is never rude or degrading to others. He can, however, get very defensive if he sees someone as a threat.
Any relationships with another character?: Younger brother of Wehr. He's grown up with him all of his life and has learned to tolerate the abuse.