Headhunter

"The Headhunter? Oh no. I think he's gonna add my head to his collection, including the Preschool Girls, even for Lincoln, his friends, and Team RWBY. Especially Dark Lord Knight..."

--Su Ji-Hoon, Heads of Glory

A Headhunter is a boss in Castlevania: Aria of Sorrow. This demon collects the severed heads of his victims.