Yeah, seen some of the first season of the show, and I had the misfortune of watching the movie (that was time that could have been wasted on better things).
Although, if you want odd creatures that are not instantly recognizable (including Digimon and maybe Chaotic), then go with monsters form Monster Rancher, Digital Devil Story, Kaijudo, or Huntik (Damn that sexy
Zhalia Moon can summon my 'monster' any day!
).
Beyond "Mons", their are a lot of other cartoons to pull creatures form. Hell, I have used creatures from a silly cartoon called Chalkzone. In the show, the characters learn that everything that was ever written in chalk (by children, mental patients, board teenager, etc.) come to life in their own strange chalk world. In one episode, they noted a number of them to highlighted the strangeness of the world. But the oddest was a bush-like mass of eye-stocks that forces eyeballs into your eye-sockets, which they use illusions to mask obvious dangers so they would have a host that would deliver them to new ground to grow. In another episode, they encounter
The Smooch. Should it kisses you and you never been kissed before, you would lough uncontrollably until you kiss someone else who been kissed, who would have to find someone else to kiss (or when the locals had enough at laughing at your expense and tell you that you can sing the effects away). Since the conditions are too family-friendly for my games, things played-out a little differently at the table, and the singing at the end was priceless!
Yeah it was a silly childish cartoon, but boy did I eat it for game fodder!