Etemon
Digimon Adventure
Think Elvis. Now think worse. Etemon is an orange monkey Elvis impersonator with a really bad voice and an evil mind, who carries a Monzaemon doll. His Dark Network lets him control most of the continent of Server. Although he can't control Digimon (like Devimon can) he can basically send his Concert Crush attack through the Dark Network wherever it extends to, so he can destroy whatever he likes o_O. Luckily, Datamon can slow down the network so it isn't so efficient (think of an internet connection), and MetalGreymon defeats him. Unluckily, he isn't completely destroyed. He returns as the more powerful MetalGreymon, covered in Chrome DigiZoid Armour, and it takes Zudomon's hammer to smash him. (And yes, MetalEtemon's doll is a WaruMonzaemon.)
More information: Etemon Digidex entry