Tyki Mikk
Shortly after Allen meets Arystar and recruits him into becoming an ally, he met Tyki. The man lives a double life: his “white side” that is a carefree and goofy man of Portuguese descent who travels with humans that love to play poker, and his sadistic “dark side” that has a lust for blood and takes up his role as Noah’s descendant (and therefore, one of the antagonists).
Tyki and his group suckers Arystar into a game of strip poker, winning literally all his assets, but Allen interferes and plays against them. He wins (with cheating learned from years spent with Cross), and Tyki gives him a pack of playing cards before his group departs.
The author gives the first hint that something is wrong when the group is revealed to have in their possession a chunk of silver with the name Kevin Yeegar on it - the name of the exorcist general that had recently been killed. In their next encounter, Allen meets Tyki’s Noah side, and, after a talk, Tyki leaves him to die from a heart wound inflicted by Tease (a flesh-eating type of golem in the form of a butterfly) after destroying his Innocence, spreading out the same cards he had given Allen over the boy’s body. After realizing that Allen’s name would not come off the walls of the jail cell, he goes with Jasdero and Debit to find Cross.
Tyki’s powers stem from his ability to selectively interact with his surroundings. This allows him to become effectively intangible, passing through all manner of matter as a ghost would, or walk on air.