Logically the son of Yin and Yang's part-time enemy, Roger the Skelewog. At first, Roger Jr. was a bully to Yin and Yang, having mock fights with Yang and teasing him and Yin, but during Woofoogeddon/Who Knows What Evil Lurks, it was revealed he longed to be Yang's best friend. In Season 2, he ultimately ends up be friending Yin and Yang and their other friends. In the episode "Disapp-Eared", it was shown that he and Dave are now friends as well, although, Roger Jr. and Yang still enjoy tormenting him. He is also now a part of Yin and Yang's Woo Foo Army. Roger Jr. also carries a pacifier in his hat. He is currently a Woo Foo Knight in a Little Less Training.