T-Bone is a Tasmanian devil who first appears in the Season 1 episode "Tazzy Chris". When he was young, most likely either a baby or a juvenile, he would climb trees to sniff out carcasses like any other young devil. The Kratt brothers saved his mom from becoming one of Zach Varmitech's robot security guards.
T-Bone was abducted by the villains in "A Creature Christmas" as a part of their outrageous plan to use baby animals as Christmas tree decorations for their shopping mall. He, along with the rest of his animal compadres, were rescued by the Wild Kratts and celebrated Christmas in the Tortuga with them before being returned home.
He made a return in "Creepy Creatures!", where he is seen as either a teenaged or fully grown Tasmanian devil. The villains captured and enlarged him with the Miniaturizer to use as an attraction for Donita's scary animal runway, but he was rescued and shrunken back to normal size by the Wild Kratts.