Very goofy and annoying, Choi wants to be free from Kim's hands. He is sadistic, since he loves to slice stuff, especially human flesh. Although, Kim's "Rehabilitation Project" seems to be working, since Choi's lost some of the desire to kill.

He speaks with a playful theatrical accent, often ending his sentences with "-de yansu" (much like he often calls people "buddy boy" in Playmore's English localizations). He also has his own character image song, entitled "Choi Bounge Ondo", which is play