Thread:Metal Mario875/@comment-30294856-20170513230917/@comment-26374068-20170514031206

He can't. Dreamy Luigi is, as Dreambert puts it, a thread in the fabric of the Dream World. He can't become him because Dreamy Luigi is a separate being altogether that's part of the Dream World.

It is speculation, but Dreamy Luigi might be able to leave the Dream World. It's just that he never does... and never has, lol.

Either way, he could fight Dreamy Bowser in the Dream World. That's going to be A LOT harder than fighting him in reality due to Dreamy Bowser being its embodiment, but... he still can.