Being a grizzly bear, he is familiar with the forest area that the Bears live in. He is the leader of the three and is seen as such. He tries his best to do what's right for both the benefit of his family and himself, but he can sometimes get carried away. Growing up without parents or guardians, much like his adoptive brothers, he grew up trying to be a model big brother, though he's not very good at it.
Panda seems to have more knowledge in things regarding technology and things from Asian culture. He is the middle brother and, as stated by Grizz, is "the link that holds them all together". He seems to be the most delicate of the trio, being both quite anxious and, as Grizzly also described, "cute". Even so, he does care about his brothers and will try to pitch in whenever and however he can.
Ice Bear is the youngest of the trio, but is, undoubtedly, the strongest and, in some respects, the most mature of them. He was able to rescue his older brothers from certain death without too much hassle and is quick to jump into action if he finds a threat arising. He cares for both of his brothers dearly. He tends to do most of the chores of the house, though he doesn't seem to mind this. Despite his willingness to pitch in where the others don't, he still takes days off to relax and unwind. Not only is he a smart and strong bear, he's also essential to the Bears' brotherhood.
Chloe Park is an ancillary character in We Bare Bears. She is a Korean girl who, in her initial appearance, snuck into the Bears'cave to gather information for her college report before eventually befriending them. Chloe skipped Junior High to University, as she is a child prodigy, and is currently studying at the University of California.
Nom Nom is a multi-billionaire anthropomorphic koala who had acquired internet fame through a series of popular videos on the internet. He is very popular and famous, and he isn't modest about it. He says he doesn't have time for hanging out with friends in real life, and he has what he needs: fame, money and the internet. As with most stereotypical celebrities, he has a confident, egotistical and manipulative nature, polarizing to his internet facade, as he portrays a cute and innocent character.