Tobias appears to be a multi-colored fluffy cloud-like humanoid creature with three fingers on each hand. Most of his body is colored red, but the lower part is orange, and his top hair part is blue. He has a medium sized mouth with blue lips. He wears a headband like the others in his family, as well as red and white shoes.
In Season 2, like many other characters, such as Darwin and Penny, the shadow that he has on his arms and legs disappear. He also acquires eyebrows.
