What about “Systemic Hypoplasia”? Could that be it?

I can believe she’s an adult pretending to be a child.

Silly Cozy.
Nopony is going to fall for that.

So, she lives with the Simpones.

@Ozymandias  
Close, but still a tad too far off lmao

I can’t read the words in the thumbnail, but I’m going to assume it says “angry midgets disease”.

“I AM 38 years old. I was just petrified for the last 30.”

@Background Pony #D032  
One of my favorite batman the animated tv series, baby doll has a sad back story

“You’re lucky you don’t have the Zach Galifianakis disease.”  
“…what’s that one do?”  
“You have a compulsion to sit between two ferns.”  
“That’s weird.”  
“You’re weird.”  
“Your face is weird.”  
“I thought you weren’t a little kid.”  
“And I thought this was a liquor store, but here we are.”

“No, I get that. I just can’t believe you’re a mare with a voice like that.”

Imagine having to show ID to buy literally pee

The irony being she has hypoplasia, hence why she looks like a kid

@Reb4Ham  
It’s fermented pee

@Digital Seapony  
Oh, she’s very skilled, no doubt. But when you’re doing a popculture “shout out,” it’s normal to be as on-the-nose as possible. It’d be like having a character based on the Bruce Timm/Paul Dini version of The Joker and not having him voiced by Mark Hamill.

Height: Smol
 
Lmao!

Why do you need an ID to buy pee?

@Kamazeustra  
the May 16th is her first appearance, and the 1981 is just making her old enough to actually be 38

The address is a Simpsons reference. Is the birth date a reference to something?

@Background Pony #D032  
I honestly can’t imagine Cozy voiced by anyone other than Sunni Westbrook. That laugh at the end of School Raze Part 1 was terrifying.

That’s “Baby Doll,” one of the villains from the 1990s Bruce Timm “Batman” series. She is a former child actress with a horrible medical condition (and one that exists in the real world–see also, Gary Coleman) that means she’ll never grow up and will look like a little kid until she dies, which will very likely be long before she gets anywhere near a normal lifespan. This makes her somewhat more sympathetic than most of Batman’s villains.
 
Cozy Glow has her hairdo, her attitude, her psychotic desire for power and obsession with revenge, her extreme and terrifying cunning, and her tactic of pretending to be cute and friendly until it’s time not to be cute and friendly any more, though not her sympathetic background (or any background at all).
 
In different episodes Baby Doll was voiced by Alison LaPlaca and Lorraine Newman. I am actually a little surprised Hasbro cast Sunni Westbrook to voice Cozy Glow since it seems pretty obvious that this is one of them there meta popculture reference things, but maybe the others were busy, or asked for too much money.

@Background Pony #D032  
I keep seeing this little lady on Cozy pics but I don’t actually know anything about her

@Moonatik  

This is my actual unironic headcanon for Cozy.

i am McLovin

@Damaged  
Ahh yes, my favorite liquor based on a book.
 
Tequila Mockingbird