Brother Voodoo

Magic comes in a variety of forms in the Marvel universe, and one of the creepiest forms of magic to embrace has to be voodoo. Rooted firmly in the traditions of Haitian mysticism, Jericho Drumm a.k.a Brother Voodoo possesses a number of dark powers that make him a perfect addition to the MCU. There's even definitely a framework in place for Drumm to make an appearance in the Marvel Cinematic Universe at some point, as he has the ability to utilize the Eye of Agamotto, and he even briefly replaced Stephen Strange as the Sorcerer Supreme for a time -- which resulted in him becoming known as Doctor Voodoo.