Roger Klotz is the main bully in the cartoon series Doug. He wasn't the brightest of persons, so he usually mocked and bullied everyone, especially Doug Funnie, for whatever reason he wanted. In Doug's made-up stories on his journal, Roger was always portrayed as the supervillain. When Roger's family won the lottery, Roger became filthy-rich. Although he got a little egoccentric, he gave up on his bullying days and became friends with Doug and the rest of the cast.