Bubble is an oddball that doesn't appear to be the sharpest tool in the shed. Acting obnoxious at times, he finds himself popped by Caine regularly. He has also shown himself to be kind and loving, as he stated that the food he cooked for the human characters was "made with all the love [he's] legally allowed to give."Bubble, as his name suggests, is a large, round bubble with sharp teeth constantly displaying a vacant expression. Being a bubble, most of his body is shiny and semi-transparent.