Tell a story to make the above user's avatar seems spooky!

[Teedgee]

A T-rex is already scary. No need to tell stories.

 

[The Nate]

buckberry (blue toad) killed mario and took his hat

 

[Teedgee]

This is a detached head.

 

[Xiahou Dun]

Mario possessed that blue Toad and he's now ready to freak out Luigi by hiding in the dark, ambushing him, and saying, "You can't save here, Luigi; your memory card is full."

 

[Mario Kart DS Fan]

you are a fake princess, but just any fake princess, . yes, THE

 

[Xiahou Dun]

BOO! That Boo amiibo made a well-placed jumpscare completely out of nowhere and made an unfortunate Luigi whiff badly on hole 18 of Bowser Badlands in Mario Golf: Toadstool Tour. Luigi otherwise would've had the gold trophy for the Bowser Championship and Luigi, who was cocky, didn't save. Bummer! Luigi now must redo the Championship!

 

[Pink Cat]

The sky is pink in the background, that clearly a sign that Mario's world is being obliterated by Majin Buu but yet he still smiles, creepy.

 

[Teedgee]

aaah......?

 

[Xiahou Dun]

This avatar has a voice that causes listeners' eardrums to explode.

 

[Mario Kart DS Fan]

you are kamek in disguise!

 

[Specific Neptune]

he watches me at night...his eyes never close, yet even though he's just a toy...i think i saw him blink...

 

[Teedgee]

He can crush you with a single finger... Do I need to say more?