Actually, I always thought of Magus as somewhat of a cross between Vegeta and Piccolo from DBZ, but albino. Lucca looks like Bulma, Chrono looks like Goku. Even in the original CT, you can compare them like this. Though it really hits home when you play psx version, and they give you those video scenes, lol.
What Kind of Avatar: Face shot of Magus casting a spell with face turned so that half of it is in darkness and the other half is lit up by the spell he's casting, the one eye in the dark half shining red, the one on the lit up side pearlescent gray, hair moving as if with the wind; animated
Size: whatever the size limit is for avatars here