When you sit around for billions of years on a dang throne, of course you'd get bored. What is there to do? The Omni-King simply cures his boredom by going to different Multiverses with his subordinated whilst he causes chaos, here and there he's a mad-scientist, an assassin, or "God!". He goes where his fellow cultured readers guides him, Sam thought as he looked at the readers, "So where will I go next?".