Raichu | Dundahbolt | In the episode "Electric Shock Showdown" of season 1 of the Pokemon anime, Lt. Surge tell his Raichu to "Give 'em a Thunderbolt", but it sounds like "Dundahbolt" because of his accent.
Heracross | Hercules | Heracross is based on the Hercules Beetle. Nuff said.
Bidoof |...