Stuffo is a 3 month old giant panda cub who first appeared with his mom in the episode Panda Power Up!
Everyone thought he was so cute, so Martin named him after Aviva's stuffed panda toy. Although he is very cute and cuddly like most baby animals, Stuffo is very smart as he helped Aviva and Chris power up their Buzz Bike with bamboo. Stuffo gets upset when Zach captures his mother for a robotic stuffed toy. The Wild Kratts are able to rescue her after Stuffo helps them. He reminds Aviva of her stuffed toy Stuffo. He later gets his color drained by Donita Donata in The Colors of China, but gets it back later on.