Quote:That'd be the Toon World card, which turns monsters into "toon" versions of themselves. To get that, Doug would have to meet Pegasus, former owner of the Millenium Eye, who is either dead or recovering in a remote location depending on whether you go by the manga or anime by the time of Battle City. I'd go with the dead version, as I can definitely see a spooky scene with Pegasus' ghost still bound to his castle, ironically unable to rejoin his wife in the afterlife.
Doug gets into one of these challenges, somehow, and someone lends him a deck. Far as I can tell, the decks are magical in some way; the magic of the deck and Doug's field interact, reshaping the deck in unexpected ways... the creatures it now summons are all cartoon characters. The image I came up with was Doug playing The Rabbit, which then did the "my stars! Monsters are such innnnnnteresting people" hairdresser bit against the opponent's creature.
Hmm, there's Inaba the White Rabbit, a "spirit monster" card that allows you to bypass your opponent's monsters, and any of the low-level warrior cards would easily fill in for Fudd. Several penguin cards, no coyote or ducks that I remember. (But then I haven't seen at least half the cards.)