Ice Bear is an anthropomorphic polar bear. His body is completely covered in transparent fur. Even though he is the youngest of the Bears, he is taller, thinner, and stronger than his older brothers.
Ice Bear is almost always distant and emotionless. He seems to not be very conversant, as Ice Bear generally speaks in one-liners and responds through action instead. Despite usually being mute, Ice Bear is notably more observant and has a better keen sense of danger than his brothers. This is most prominently demonstrated in the episode "The Grumpy lolcat, when he was the only one who could see through Grumpy Cat's celebrity personality and thus realize her dark intentions. Ice Bear is also very intellectual, as demonstrated in the episode "Bar None Ranch Chaos".
When Ice Bear does speak, he tends to speak in the third person, such as referring his possessions as "Ice Bear's" possessions. It has also been shown Ice Bear's voice is rather monotone, even when he is excited. Despite his stoic nature, he cares deeply for his brothers. In addition, Ice Bear appears to be very concerned with hygiene and cleanliness. Ice Bear has also been shown to be multilingual, as shown in episode such as "Bar None Ranch Chaos" and "Video Date" to name a few.
Daniel Chong has stated that the inspiration for Ice Bear's personality comes from Snoopy from Peanuts, Gromit from Wallace & Gromit, Abed from Community, and himself.
Three Bare Bears
Ice Bear's personality seems to have been mostly untouched compared to his brothers from his appearance inthe comics to We Bare Bears to Catscratch adventures. In the comics, he is notably much more talkative—although still retaining his tendency to speak in the third person—as well as being much more prone to expressing emotion. He also takes less of an active role in the cartoons, with Grizzly more often than not acting on behalf of all the Bears (though he does occasionally make suggestions as to what Grizzly should do). Ice Bear is more aggressive in the comics saying things such as "I rip the lips off people who abuse their freedom" & more.
Ice Bear has incredible amounts of physical strength, being able to lift boulders with relative ease, as shown in "Panda's Date". His sharp claws are retractable, as seen in "Weirdmadggeon". Ice Bear can lacerate objects with his claws, as seen in "Bar None Ranch Chaos".