Ok, I've been overhauling the system to make it a whole lot better. Now each character has its own types, and many have their own abilities. If anyone wants to contribute, they are welcome to. The system is pretty similar to the way gToons were done.
Template:
Character's Name: If more than one card of the character, a title can be used to differentiate them
Power: 1-10, the higher the better. If the character gives bonuses or penalties, be sure to adjust the character's own power to balance.
Characteristics: Usually just includes race and class.
Source: The name of the anime/cartoon/movie/cereal/etc the character is from.
I'd prefer characters from reasonably popular anime or fantasy settings that several characters can be harvested from. Dragon Ball Z, Pokemon, Final Fantasy series, and the like are good choices.