ice bear was only called "ice bear" by himself, episode titles, writing, and celine from video date, and never by any other character
celine never knew who ice bear was until the end of the episode
he was only called "brother" by his brothers and "he" by other people
"ice bear" is ice bear's way of saying "polar bear", so he is technically saying "polar bear is bored" or whatever, which is proven in the episode "hibernation" when he said he found a book about "ice bears" and when he said "lady ice bears hibernate"
what IS his real name? i really want to know