Ben's Dream World is actually his own mind that appears in Ben 10 episode Perfect Day.
In his Dream World he dreams about cheerleaders on a bus including as a cheerleader.
One of the he has in his dream world is going to Pizza N. Play and playing a Sumo Slammer Video Game.
He also dreams about battling and beating Kevin 11, Sixsix, Vulkanus and Vilgax and sending Vilgax to the Null Void.
In his dream world Enoch is disguised as Lt. Steel.