6:06 it's referencing to Luigi's Mansion 2: Dark Moon! And it's amazing from how easy it is to find some of these! And 1 more random thing to all the people who are reply by saying the "It's right there" on 1 of the comments that are saying "I can't see it" it's a joke!
@Spencer Kelpine many people argue so hard like "YOU DON'T SEE IT GEE YOUR SOOOO DUMB" Likes like "hey I lose them" the PEOPLE"WHAT YOU STUPID" But youtube edition.
I would like to think that Mario ran back through the mushroom kingdom and put up photos of his brother for Luigi to enjoy and then proceeded to threaten bowsers troops and there families to do the same thing over again all for Luigi’s birthday.
I have a theory: All the 8-Bit Luigis were all actually real once, and all the levels they were found in were actually the levels from the original and Lost Levels, with the sky levels being those wind levels and the levels like original 1-3. 16-Bit Luigi was from that haunted forest in World. The ice Luigi could be from NES Remix, with the ice level. (Or maybe it was 2, I didn't do any research.)
Theory: These are actually Luigi’s from different universes that were frozen in space and time and that they are just fragments of what is left of them.
I remember this game I was mad Luigi is my favorite character and I was so happy I can play as him not as player 2 but the timer was at 100...that’s what made me rage