I believe that's Johnny Gash

That's the sort of thing that starts talking to the protagonist in a dark-comedy/horror movie that takes a turn for the existential and depressing near the end.

... basically, whatever you name it or it names itself, DO NOT TAKE ITS ADVICE

Tetanus

Scarface

Slash

Uncle Fester

Finguy McStabby

No matter how you call him, do not listen to what he says.

Sure let's do that in last name, first name format:

Hospital, Trip

Malcolm, since it’s in the middle.

Ghastly

Do you want to know how I got these scars?

Everybody named Flippy, stand up!

Pinky

It looks like the cat from the Real Housewives/Cat meme. https://knowyourmeme.com/memes/woman-yelling-at-a-cat

Clyde

Hubert

Mr. McGillicutty

Mr. NitrileNextTime.

Tetanuir

Mouthful of congealed blood

Well, he's not candy.

https://www.youtube.com/watch?v=VHSdTFbU3Ts

Finger McFingerface

Karl with a K

He will be played by Ryan Gosling in the future live action movie

Tippy

You wanna know how I got these scars?!?!

Kevin.

Scrubby

Digit

thats Fingy, we hang.

Seamus