Bizzy has gotten softer as a rapper, and on top of that, he's a nutcase. Listen to his voice on Notorious Thugs or off most songs on Heaven'z Movie, then listen to his more recent stuff that has come out within the past five or six years. He went from being a lightning-fast rapper to a lightning-fast singer.
Oh yeah, and if you have the Bone Thugs Collection Volume Two DVD, watch the studio footage of Bizzy where he just acts a fool and knocks stuff down like an idiot.