King Boo is a fictional Mario character.
For a full review, follow this Yellow Brick link
What does he have anything to do with Marker Comics?Edit
In Night at the Nintendo Museum, Captain Tonnybrow has to face King Boo (or Boo Boy, as he calls King Boo), who parodies Atilla the Hun in Night at the Museum.
Where did that weird nickname come from?Edit
In some episode of "Winnie the Pooh", Tigger refers to Pooh as 'Pooh Boy'.