Nukesaku

Numesaku is a minor antagonist featured in Part III: Stardust Crusaders

About
Numesaku is a henchman of Dio and one of the last vampire manga. Numesaku apparently suffered abuse from the rest of Dio's allies, being treated as a burden. He is quickly defeated by Jotaro and the group when they discover his trick.

Stand
Numesaku's stand is The Idiot. As far as stand powers go, it is one of the weakest shown, with the ability of allowing its user to grow a face on the back of his head.

Trivia

 * Generally the Vampire Stand Users developed powerful Stands, Numesaku being the exception.
 * Numesaku makes a cameo in Part III's videogame: if Alessi uses his Stand's power on Dio Brando, Dio will be briefly turned into Numesaku.