Rothchild and the canines first appear in the bar Jack enters to find a drink, trying to convince an alien to help them fight against Aku in order to free themselves of his grasp. Rothchild and his colleagues are intelligent and well-mannered but retain habits from their ancestors, like riding a vehicle with their heads out the window or wagging their tails when happy. Rothchild shares the same personality as his group, the archaeologists, who are passionate about studying their past. Rothchild and the archaeologists gained the ability to walk upright, use their front paws as hands, complete with opposable thumbs, enhanced intelligence and the ability to talk fluently. Similarl to his fellow archaeologists, Rothchild resembles his quadrupedal ancestors (In his case, dauchsunds) in size appearance and certain characteristics, such as wagging their tails.