Killua Zoldyck: he's quick witted and mischievous but stays unflinching in the face of danger. Killua always keeps a nonchalant air about him, as he has trouble showing any sort of emotions.

Gojo Satoru: He's playful and easygoing with his students and colleagues, he can be crude and arrogant with curses and his superiors. On top of his lovable personality, he is a complex individual. (I personally headcannon him being autism and adhd.)