Tenzin was originally a child in poverty living in Tibet that Sue Ellen had sent letters to for a while. He helped fill the void because Sue Ellen is an only child and doesn't have much in common with her friends. Sue Ellen mistakenly called him her "Little Brother". Later, he moved to Dharamsala, India where he started to email Sue Ellen. They eventually met which revealed that Sue Ellen and Tenzin are both the same age. He is a panda but originally had black fur. This was later retroactive continued.