Well, basically anything, but I should point out that you start only with the most simple stage of Digimon, and don't pick the entire line, just the start, and how the character treats the Digimon makes the more advanced forms.
EDIT: [url=http://www.roleplayerguild.com/topics/79718-digimon-digital-monsters-pillars-of-blood-digimon-d6-hard-drive-cataco/ooc]New Link[/url]