Blockhead Bowser

Blockhead Bowser is one of Bowser's forms, and the final boss of Mario Party DS. It is a collection of blocks that form in three different ways - a top, a huge block, or a trail of blocks. The form is impenetrable, except for the one golden Bowser Block, which had to be attacked by the player in order to defeat Bowser.

Bowser transformed into Blockhead Bowser via the Mega Morph Belt.