Grim Reap’er

Grim Reap’er is the main protagonist of Infinity Train The Lost Book. He was originally a deuteragonist to Tulip, before the show was an anthology. He is a human dressed like a Null in order to mask his true identity from the Denizens of the Infinity Train.

Trivia

 * Due to not originally coming from the Infinity Train, his number is -4, which means the Train reads him as not even a Null.