What wall!?

[Antihack1000]

i am playing super mario sunshine and there is a painta that is angry, he is looking at one of the wanted signs. he said that "someone ruined my wall", and there is a ahine inside the same building, is there a ruined wall?

[Qwerty]

Where at?

[Antihack1000]

well, its near the statue that you spawn at to go to bianco hills. its to the left, you will see a painta having a spaz attack at a wanted poster, thats the guy that has the "ruined wall".

[Qwerty]

Oh yeah, that guy:

"Unforgivable! I have
HAD it! Someone
ruined my wall!

What does “M”
mean, anyway!? And
have we met before?"

I think he's referring to the wall with the posters on it, angry that someone put up posters on it unpermissively.

[BP]

Oh he's the one who starts the Unlock Luigi sidequest

[Antihack1000]

Oh he's the one who starts the Unlock Luigi sidequest

maybe when you complete the game, he chills out because shadow mario (aka baby bowser) has been captured and the posters are taken down!

[Markio]

On the other side of that building is a large painted X, which is one half of a blue coin.  When you obtain the blue coin the X disappears for the rest of the game.  However, during the ending cutscenes, the X appears on the wall either way!

Yeah, the M on the wall changes to an L after you defeat Bowser Jr.  Kind of like how Peach was trapped inside the stained-glass window in SM64, Luigi is trapped inside the paint on the wall.