As a baby, he was rescued by a team of firemen who prevented him from falling off a tree-top during a storm (as such, he has a phobia of being in trees, which he states in "Paperboyz").
Panda used the doll as a method of convincing himself to look through a window on the wall of the observatory, something he has always been curious about but never attempted to actually see.
After using the doll to prop himself up, he finds a television set and becomes entranced by the moving pictures, and Anime, which is most likely how Panda came to appreciate it later in his life.
In an effort to show his "friend" the Television, Panda escapes the Habitat through a food chute but after being discovered he jumps out the window of the laboratory and hides in a bamboo delivery truck, which brings him into downtown Shanghai.
This is how he learned Russian, and because Yuri spoke exclusively in the third person, this is most likely how Ice Bear obtained the habit.
As seen in "Losing Ice" and "Coffee Cave", his brothers often take him for granted and are unappreciative of all the cooking and cleaning he does, although they eventually realize the error of their ways.
A child prodigy, she attends college but doesn't have many friends other than the bears and has a hard time relating to her much older classmates.
Chloe devotes most of her time to studying in the hopes of having a secure future and becomes stressed when it seems like she is on the verge of failing as evidenced in "The Library" and "Professor Lampwick".
In "Bear Squad", Tabes is shown to possess deduction skills to the level of identifying animals and people by a limited amount of evidence.
She has even learned to be more surveillant with her duties and upon knowledge of Charlie's true existence has opted to watch and protect him from afar.
She finally returns in season 3 episode, "Lucy's Brother" where it is revealed that she delivers fruit to the Bears every Friday.
In "The Limo", Lucy begins dating Kale (voiced by Omid Abtahi) which upsets Panda, but he ultimately sees that her happiness is what matters.
He first appears in "Grizz Helps" where Grizzly answers a want ad for someone to aid him in traveling back in time.
The scientist reappeared in "Summer Love" with a pelican assistant named Gary and tried to use a body swapping machine on Panda.
Ralph (voiced by John DiMaggio) is a yeti who enjoys playing cruel pranks on humans and animals.
He ends up abandoning Charlie when the latter refuses to let a group of humans fall off a bridge as part of a prank, considering him a "snooze-fest".
Paul, who resembles a large well-built man, jumps to conclusions at Panda using his phone to message his wife and threatens him, but becomes nervous and faints when Annie goes into labor.
The Bears band together to get Annie and Paul to the hospital where she successfully gives birth to a baby boy that somehow manages to remove the fake hands off of Grizzly.
However, the Bears decide to kidnap him and bring him back to the cave in an effort to force him to give Chloe a second chance.
When Chloe passes, Lampwick reveals that he can untie his own bonds and has just been testing her, admitting that she is not the first student to "kidnap [him] over a grade."
He briefly returns in "Hurricane Hal" where he is shown to have an omniscient presence as the narrator, capable of explaining exactly what each of the Bears is doing and apparently is aware of who Charlie is.
The Baby Bears are rescued from quicksand by Karla and Dave who have been shipwrecked on the island for some unspecified amount of time.
Karla mostly misses her sister whom she loves very much and forms a motherly bond with the Baby Bears, while Dave displays a slightly disinterested attitude.
A tall, large bearded man who much like Baby Ice Bear, had a tendency to speak in the third person, Yuri lived in a life of solitude after losing his family to some unknown causes.
He displays a slightly lethargic, yet kind and joking attitude that gets him an invitation from Grizzly, Panda, and Chloe to hitch a ride with them as he claims to have lost his bike gang, much to Ice Bear's annoyance.
They appear in the episode "Neighbors" and are depicted as an overtly kind couple who immediately take joy in conversing with the Bears.
They end up finding knives and other cutting instruments in the couple's RV, along with a wall full of pictures of the Bears.
Esteller or Estellar, as spelled in the credits, (voiced by Estelle) is a famous pop song singer who Panda and Tom are huge fans of.
She appears in the episode "The Mall" where she arrives at the titular location to personally sign autographs for her fans, whom she affectionately refers to as her "starlings".
She thanks them and gives them new signed shirts while politely berating the other fans who had cut in line and had chased Panda and Tom around by telling them, "Don't be jerks."