Game This page is a stub. E King Boo [Edit] [Talk] This article is a stub. You can help WarioWiki by expanding it. This spooky character is the king of the undead!KING BOO rules over all the boos and is very greedy.In the LUIGI'S MANSION SERIES he would always be an antigonist.Sometimes he helps BOWSER and is always trying to scare and capture LUIGI. Categories: Game articles Pages needing a quote Class E articles Article stubs Villains Bosses Class E Articles Community content is available under CC-BY-SA unless otherwise noted.