Scourges of: Chip and Dale: Rescue Rangers
Everyone who's ever so much as looked at a Rodentology book (yes, I checked, that's a real thing) knows that the most natural of enemies for the chipmunk, particularly the anthropomorphic chipmunk is the rat. More specifically, the Pi-Rat, who indeed where pirate garb. It's science.
But hey, even these scourges of the pond (because they're tiny) could be known to aid the Rescue Rangers now and again.