Lavi

From Canonwars

Lavi (or Ravi or Rabi--but never Labi) is an exorcist and bookman-in-training from the D.Gray-man universe. In his own world, he spends his days kicking ass, taking names, and compiling knowledge about ancient historical conspiracies. There are currently no Akuma to be had on the island, so these days Lavi works as a teacher at the Purgatory High School, in the history department. The fact that he's 18 and has never set foot in a classroom in his life does seemingly nothing to deter him from this task.

Lavi is played by Cait, who has a bit of a 'thing' for him.