Owis bore very little physical resemblance to the rest of his family, being podgy with curly brown hair, which was often a topic of mockery among his family. He was looked down upon and bullied by the rest of his family, partly due to his dim-wittedness and partly because his very existence was taboo. Being only newly Loomed, Owis was very immature. He developed a mean streak, probably in response to the teasing he suffered. He was trapped in the House of Lungbarrow when it was buried underground, which made him unable to go to the Time Lord Academy — or anywhere else. Thus, he had a very limited education. This was likely a big factor in why, even at the age of 675, he was still very immature, childish and just a bit cowardly.