Bowser Memory M and Bowser Memory L

Block Mario and Luigi are encountered in Bowser's brain in Mario & Luigi RPG 3!!!. When the bros and Yellow Star gets to the brain, a strange creature scans the bros and creates badly made block versions of Mario and Luigi! They seem to have the Bros personallity planted in them, as if they attack Block Luigi a few times, he'll hide offscreen.

One of Block Mario's attacks is growing giant. He'll than hit blocks above him, and the debris will try and fall on the Bros, who must counter by using hammer. If the block is red, the debris will fall on Mario. If the block is green, the debris will fall on Luigi. A Koopa will then touch Block Mario, causing him to shrink. Another attack will have a star appear and Block Mario/ or Luigi, will absorb the star and try to ram the Bros. A single coin will show how the invincible Block Bro will attack. If the coin is on the ground, he'll do a ram. If the coin is in the air, he'll jump over the player. Block Luigi will have his own atack where he will be chased by a Block Boo. Block Luigi and the Block Boo will run at Mario and Luigi and they won't stop until the Block Boo is stomped on.

Unfortunatly, the Block Bros was no match for the real Mario and Luigi.