Bestovius

Bestovious is a sage that appears in Super Paper Mario. He is a powerful sage, the Dimensional Governor of Lineland and the so-called "Flip Wizard". He thinks highly of himself and he is a descendant of the ancients. He is also a distant cousin of Merlon and Merlee. He is responsible for granting Mario the ability to switch between the second and third dimensions.

Bestovious believes that people from another dimension listen to him, and believes that they would wish to know that Mario can flip dimensions with the A button. This is, indeed, breaking the fourth wall.