chara is a human child that died at 9 so they follow frisk in the underground, however frisk is killing all the monsters, which are charas friends and family, so all they want is to get away from frisk, however they cant go to far from frisk, chara has a little girly scream, so if they suddenly hear a stick snap out of no where they will get scared, but then tries to act cool, chara is sassy and so if frisk hits their head they'll call them an idiot and laugh