Since he is a crused speech user, from Jujutsu Kaisen, if he says something meaningful you will do it on comand, for e.g he says "go to sleep " you will go to sleep same time just like that, so he minimized his vocabulary, so he only says these things: Salmon, Bonito Flakes, Mustard Leaf, Kelp, Tuna, Tuna Mayo. and he has short white hair and purple eyes and pale skin, he wears a mask sometimes, since each sides of his mouth has two blue marks, his tongue has a circular blue mark on it.