Famicom Monster Medley

I've wanted to do another medley piece for a long time, what with them being my first deviations. What with it being Halloween, I figured what better time to do a villains piece! 19 Famicom/NES villains from Nintendo games... Including several you may not have seen before:

From the bottom-up:
Bowser (Super Mario Bros., SMB:TLL, Super Mario Bros. 3)
Wart (Dokidoki Panic, Super Mario Bros. 2)
Donkey Kong (Donkey Kong, Donkey Kong 3)
Boss Unira (Clu Clu Land Disk)
Devil (Devil World)
Ganon (The Legend of Zelda)
Murasame (Mysterious Murasame Castle)
Medusa (Kid Icarus)
Mother Brain (Metroid)
Medeus (Fire Emblem)
Gyiyg (Mother)
Doma (Fire Emblem Gaiden)
Zoda (Star Tropics, Star Tropics II)
Zulie (Gumshoe)
Gyumao (Yuuyuuki)
Nightmare (Kirby's Adventure)
Thunderbird (Zelda II)
Dr. Ivan Walnuts (Joy Mech Fight)
Avatar of Darkness (Shin Onigashima)