Bowser Junior

Robert "Bowser" Bernard Koopa Jr.  but usually referred to as Bowser Junior or simply Junior, is a main character in The Super Mario Kingdom franchise. His and Bowser's real names were revealed to be Robert in The Koopa Kids!, however, that video was non-canon as the Koopalings miniseries was a remake. However, their name of Robert might be revealed as canon sometime in the future 
From 2020 to mid 2021, he was the unbeloved and spoiled son of Bowser, and was usually parented by Chef Pee Pee, who was constantly annoyed by him. However, as of late 2020 to onwards, he became somewhat more mature. His relationship with Bowser improved to the point where they both love each other and started to bond everyday. Currently Junior doesn’t bother Chef Pee Pee anymore, however, Chef Pee Pee still hates him.
He hangouts with his current friends such as Cody, Joseph, Jeffy and occasionally Richard Goodman and formerly others such as Toad.