Rupert is an unusually buff reindeer who walks upright like a human, and has a green nose, and a pair of antlers.
Rupert, after being rejected by the other reindeer, chose to live in isolation, where he trained himself and became stronger. At first, he claimed the situation with Santa Claus was not his problem, but realized that this was his chance to earn his spot back in North Pole society, went and saved Christmas from Hector Con Carne. This shows that while he became bitter towards the rest of the North Pole, he actually still wanted to fit in.
He has a tough-guy persona.
As a North Pole reindeer, he is able to fly. As a parody of Rudolph, his nose is able to create laser beams which can be used to cut through surfaces.
Due to his training while in isolation, he has also built up a large amount of strength.
- On the color wheel, Green is opposite to red, and is thus considered red's "complimentary color"
- Also, when paired with Rudolph, Rudolph and Rupert would have both Christmas colors as noses