- “Ack! It's so dark in here... Why does everyone seem to like this place so much? Can you turn on the lights, Mario? Otherwise it'll be dark all the way through this place.”
- —Olivia, Paper Mario: The Origami King
Graffiti Underground is a location in Paper Mario: The Origami King, an underground sewer area with graffiti and a valve controlling the drain. It is used to reach Peach's Castle from Toad Town, and is accessed via the Manhole Hook. Folded Soldier Swoops and Scaredy Rats are introduced here. There are also a few areas throughout the sewer where Mario must hit a red button to light up the area.
Graffiti Underground is a small, simple area. Once Mario has acquired the Manhole Hook from a Shy Guy in Toad Town, he can pop open the sewer lid and travel through the sewer to reach Peach's Castle as an alternative to crossing the regular bridge, which is now broken. Right after Mario descends the ladder, Olivia asks him to hit a nearby button to light up the place, revealing a drawing of Mario and Princess Peach on the wall. To the left of the ladder is a Not-Bottomless Hole in the wall. To the right is a yellow Toad with glasses huddled in the corner. When he notices Mario and Olivia, he gets up and introduces himself as curator of the Musée Champignon, which can now be accessed.
At the start of the next area is another button Mario must hit to light it up, revealing origami Swoops on the ceiling, which drop down unexpectedly on Mario. After a Not-Bottomless Hole, there is a set of stairs leading down to a Heart and the entrance to the next area, where there is another button and a ? Block containing a Super Mushroom, guarded by origami Scaredy Rats. As Mario starts to advance through this section, he is stopped by Scaredy Rats coming out of the wall and Swoops coming in from the left, forcing him to battle. He can then move through to the next area.
The next area has yet another button Mario can hit to light it up, revealing a swarm of origami Swoops and a small pool of water in front of the pipe leading up to Peach's Castle. To reach it, Mario must climb down a ladder and use the 1,000-Fold Arms to pull the valve, effectively draining out the pool. Mario can then access the pipe as well as the Coins and treasure chest in the drained pool, where he can find a collectible treasure. To the right of all this is a separate section with a crate floating in the water, guarded by two origami Scaredy Rats. Mario must defeat them and break open the crate to reveal a Toad, who tries to thank him before floating down a tunnel.
If the player returns to the Graffiti Underground after clearing more of the game, more and more graffiti is added; the full set of pictures depicts Bowser attacking and defeating Mario, Luigi, and the Toads, only for Princess Peach to defeat him with her parasol.
|2 Hidden Toads
|After entering the Graffiti Underground, Mario and Olivia find the Musée Champignon curator sitting in a corner. Following this, the Musée Champignon becomes accessible.
|Rather than using the exit Pipe, take a detour to the right. There is a crate guarded by Scaredy Rats, which releases a Toad when opened.
|After turning on the light in the first area, the hole is seen left of the ladder.
|Left of the stairs in the second area.
|Left of the handrail in the drainage pipe area.
|On the wall above the drainage pipe.
|At the very end of the last area on the wall.
|There is a chest submerged near a pipe leading to Peach's Castle. Battling against nearby Scaredy Rats reveals a 1,000-Fold Arms Magic Circle used to drain the water above.
|At the base of the stairs leading up from the third level in the sewer, there is a ? Block guarded by Scaredy Rats.
|Near the Warp Pipe leading back up to the surface, there is a ledge with guardrails and a dark square patch on the ground. Jumping from this spot will reveal a Hidden Block.
| Graffiti Underground - Plays in the Graffiti Underground.
Names in other languages
|"Naknakseo" Underground Waterway; partial reduplication of "낙서" (nakseo, graffiti)
|Graffiti Sewer System