Creepy characters&things in Mario Series, can be accidental.

[yoshiking14x]

It can also include creepy sounds or it could be moments or things that like thoughts that are creepy(Like fridge Horror from Tv. Tropes).

Dosen't have to scare you, but you can put stuff if you know its bizarre or unsettling.


That giant caterpillar from Mario Galaxy was rather gross looking.

 

[Mike Wheeler]

Super Paper Mario in general had a dark undertone, with the World of Nothing, River Twygz Bed music, and (of course) Mimi.

 

[Xiahou Ba]

The hotel Mario cutscenes

HellValleySkyTree people from Shiverburn

 

[Mike Wheeler]

The hotel Mario cutscenes

In a funny way, yes.

 

[Xiahou Ba]

The hotel Mario cutscenes

In a funny way, yes.

No that mario and voice is legitimately scary

 

[Stargazing]

Waluigi

I would also say those cutscences. Damn, the YouTube Poops they also spawn are creepy as well!

 

[Glitchy Bowser Jr.]

The HellValleySkyTrees.

 

[Gumball Machine]

Big Boo's Haunt, particularly the coffins

The Lethal Lava Land painting

The Graveyard in Luigi's Mansion

 

[Fawfulthegreat64]

The piano
The Underhands

Also in my mom's opinion, Antasma

 

[Mike Wheeler]

The hotel Mario cutscenes

In a funny way, yes.

No that mario and voice is legitimately scary

I though Mario's voice was more derpy than scary.

 

[Lario]

I would also say those cutscences. Damn, the YouTube Poops they also spawn are creepy as well!

 

[yoshiking14x]

Super Paper Mario in general had a dark undertone, with the World of Nothing, River Twygz Bed music, and (of course) Mimi.

Bonechill is also disturbing.
Good thing the creepy stuff was flat looking and under-detailed, Mimi would be scarier if she wasn't in the Paper Mario series.

I read somewhere else(don't remember where) that the Hellvalley trees where in 3d World, is it true?