Panda seems to have more knowledge about 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 is Charlie's best friend, but he doesn't want to admit it. Although, he did admit it in Panda's Art . He is 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.
In "Panda 2", it is revealed that he was originally raised in captivity in a Chinese Panda Zoo until he escaped and met Grizzly and Ice Bear on the way.
Personalty
Panda is characterized as neurotic, artistic, and something of a drama queen.
He's gentle, yet somewhat jumpy and insecure. He is probably the frailest of the three bears, as in "Our Stuff" he was shown being hit by a basketball that knocks him over and he calls for a time-out. He is also severely allergic to nuts and gets embarrassed easily.
His hobbies consist of dating sites, social networking, anime, video games, and art. He is shown to be talented in drawing and painting in general, most notably Manga. He falls in love easily and tries desperately to get a girlfriend.
He is sensitive and easy to upset. Despite being mostly compliant, Panda can become assertive if the need arises, especially when it comes to his brothers in trouble.
TelekInesis and ElectrokInesis
Panda gains a temporary superpower in the episode, ''Brace'' when he received a brace to adjust his teeth. His power comes from the fact that there are too many metals in his body. However, it slowly drives Panda insane as it let his emotions to drive out of control.
The brace gives him the ability to telepathically manipulate electronics and float them in the air. He also can create a massive meteorite formed by thousands of smartphones with the Bear Cave as the core to create great devastation. He also can telepathically fly and fire electrical blasts.
He lost his power after Grizz and Ice Bear remove his brace.
History
The episode "Panda 2" shows that, as a cub, Panda lived in an animal sanctuary near Shanghai, China. He was extremely cheerful and polite, even greeting the food chute that fed him as a friend. Unlike his adult form, bamboo was his favorite thing to eat. One day, a staff member in the observation room for Panda's enclosure noticed he looked lonely and gave him a panda doll as a companion. Panda and the doll were inseparable until one day he used the doll to help him climb up and see through the room's window, from which he had seen light shine from time to time.
Upon looking through the window, he saw a television and was absolutely enraptured. The very next day, he (along with his stuffed companion) escaped so that he could watch 'the magic box' (as he called the television) show him its wonders, but it was turned off, so he went to find another. He found the security camera room, but the televisions showing the camera feeds quickly bored him. After wandering for a while, he saw some trees outside a window set in a door and thought this window was another magic box. Unfortunately, the sanctuary staff had realized he had escaped and chased him until Panda found an open window. He jumped out to his freedom but was forced to leave his stuffed companion behind. He escaped in a truck filled with bamboo as the sanctuary staff continued their search. It is unclear if he remembers any of this.
After some period of time, he met Grizzly and Ice Bear and they become sworn brothers after that.
Relationship
Grizzly bear
Grizzly and Panda are brothers. Grizzly is a leader figure to both Panda and Ice Bear. In "Our Stuff", Grizzly helps Panda find his backpack, which contained his phone and can also bear stack as a way of traveling faster. The two have been shown to be very close to each other, especially in episodes such as "Jean Jacket", "Nom Nom", "Brother Up", "Occupy Bears", "The Road", and "Pet Shop", to name a few. In "Cupcake Job", while trying to protect themselves from being attacked by an angry mob of customers, the two admit what they had done to the laptop when they hatched the idea of making a giant cupcake. They end up scooping up all the cupcake batter that covered the room and used it to create a giant, and disgusting, cupcake. In "Hibernation", when Grizzly's brothers checked upon him, they woke him up because of a dream he was having. They then said they would head back to the cave to let him rest. Grizzly didn't want them to leave which led to Panda offering if he would join them outside, to which Grizzly accepts. The three end up sitting out under the stars together. On making on Grizz's own movie 'Crowbar Jones' he makes Panda become his sidekick and he makes Panda as the funny character of the movie.
Ice Bear
Panda and Ice Bear exchanging information about each others' species. Bro's forever!
Ice Bear and Panda are brothers. They are able to bear stack as a way of traveling faster. They have been shown to be very close, such as in "Jean Jacket", when Ice Bear and Grizzly were extremely upset after Panda got smacked and when he consoled him after Grizzly's sacrifice. He also voluntarily stepped in to assist Panda in "Brother Up" and has shown great emotion after being separated from both of his brothers in the cub episodes. Ice Bear is shown to be very protective of Panda, as shown in "Nom Nom". They are shown working together to stop Grizzly's obsession with the burrito in "Burrito", and in the short, "Bear Cleaning", when they posed and took several selfies with Grizzly's clump of fur before putting it back. In "Hibernation" and "Panda's Sneeze" alike, they were shown bonding with each other. In the former, they were shown reading facts to each other about their respective species, and in the latter, Ice Bear had blushed when Panda asked if he thought his sneeze was cute, and later, at the cute-off, Ice Bear gave him a rose and called him precious. Panda has actually never mentioned Ice Bear by name.
Nom Nom
Nom Nom assisting Panda in creating storyboards for the "movie".
The two do not really know each other that well, however, Panda knows of the incident between him and Grizzly that occurred in "Viral Video", and even refers to the koala as "a butt" in "Nom Nom". In the same episode, when Nom Nom is able to manipulate Panda and Grizzly and get them to do his bidding, he ends up luring them into a potentially deadly trap in order to regain his own fame while also trying to keep Ice Bear out of the picture as he had discovered his plan. Ice Bear managed to save Panda and Grizzly while Nom Nom ended up getting what he wanted in the end, though it was not done according to his original plan. In "Panda's Sneeze" Nom Nom wants to be the cutest more than Panda, he deals with Panda making Panda looks cooler and not cute in The Cute Off. But in the end, Nom Nom is jealous and he attacks Panda that he suppose to lose and Nom Nom should be the cutest attack him using a pillow making panda more sneeze with the feathers. No one won that contest.
Chloe Park
Chloe and Panda holding hands.
Much like his brothers, Panda's relationship with Chloe is explicitly passive, with no particular empathy towards either party. In "Chloe", Panda was submissive during Chloe's research and was often shown getting along with her. Evidently, Panda did confess to sabotaging Chloe's report alongside his brothers and took part in answering student questions to assure she acquired a perfect grade. Alongside Grizzly and Ice Bear, Panda tried to help Chloe become more confident in "My Clique", taking inspiration for his lesson from romance movies. When Chloe put what she learned to the test, she found herself coming across as odd to some of her classmates and left campus grounds, embarrassed. She ends up explaining to Amy how she felt after the Bears throw a "mature" party for her at their house. When the party is over, she helps the Bears clean up and begins to play charades with Grizzly, Panda and Ice Bear joining in.
Lucy
Panda trying to hurry into Lucy's group photo.
Panda began crushing on Lucy in the episode "Panda's Date", in which she saves him from having a potentially fatal allergy attack with her spare EpiPen. In the episode, through Grizzly, Lucy hangs out with Panda. He wants to impress her but Lucy bonds more with his brothers than with him; this makes him quickly jealous, to the point he attempted to lock them in a closet to have dinner with her. When Panda ate out with her at the restaurant, Lucy seemed annoyed by Panda's strange behavior. She still remained friends with him and his brothers as she makes a few more appearances throughout the series.
Charlie
Charlie placing Panda on top of the Bear Stack.
Panda has mixed feelings for Charlie, not enjoying his company too much whenever he comes around, though Charlie tries his best to make him and his brothers happy. In "Charlie", his behavior quickly gets on Panda's nerves, as he not only smacks his phone into a bowl of soup but also forced Panda to sleep on a soggy pillow and was generally being inconsiderate, however, they did reconcile before Charlie had to leave. In "Brother Up", Charlie helped inspire Panda to start acting like the big brother; the leader, after he accidentally scared away a pack of wolves. Charlie also threw the Bears a party in the wilderness in "Charlie and the Snake" to help show them how much he appreciates their friendship.
In "Chicken and Waffles", the two seem to grow closer after Panda has to ask him for help getting to the restaurant after he accidentally broke his contacts. Charlie does everything he can to try and get to Chicken and Waffles. After a dispute, the two attempt to go their separate ways when Panda gets into trouble. Charlie goes to save him, but the tables turn quickly. Panda reaches out to save Charlie. In the end, Panda, and his brothers decide to eat with Charlie rather than at the restaurant.
Clifford
At first, Panda was only interested in impressing Lucy and when Clifford found out, he wasn't very happy with this. However, when they both saved each other from an allergic reaction to peanut butter, they became friends, realizing that they each have something in common.