Powereegee is Beegee's and Balleo's grandfather. He was very powerful, for which reason he was feared (by his enemies). He loved his family a lot, so he gave them anything they wanted. He always kept his sons (Billioneegee and Barbareegee) at peace with each other, but after his death, Barbareegee showed his true colors.
His soul still tortures itself in The Beegee Heaven, although residing in Graveyard of Beegee's Ancestors, he looks down on (before it was his sons) grandchildren whenever they fight.