Goner Kid

"Have you ever thought about a world where everything is exactly the same... except you don't exist? Everything functions perfectly without you... Ha, ha... the thought terrifies me."
Goner Kid is a grey version of Monster Kid can appear in Room 91, in a dock right before the room where Undyne first throws spears at Frisk if the fun value is greater than 90. She's commonly (and admittedly logically) associated with W. D. Gaster and the rest of Gaster's Followers, a group of grey NPCs that are found near the elevators in Hotland when the fun variable is at a certain value. They all resemble certain NPCs in the game but with a few minor differences, sharing this with Goner Kid's design. But there's one thing different about her (among others). If you try to call Papyrus (or Papyrus and Undyne) while in a room with a follower, they will only get the line "The phone won't turn on". Unlike all of Gaster's Followers and any room connected to Gaster, Frisk's phone will work if they call Papyrus while in the room with Goner Kid. As well as the fact that unlike all of them, she is found outside of Hotland and says nothing of Gaster, just describing a situation that matches Gasters, but is a rather... realistic thought. It's only unusual in that this applies to someone in their universe, it's not an unusual thought or scenario... let's just say I know how she feels. So I feel like, unlike the rest of them, she's not related to Gaster. She's just sitting at the docks, having these thoughts. I'd say that she just has this feeling at the second.. that it definitely could happen... and it would work out just like that. That's the feeling I get. Besides; Goner is a child, something that none of the other Followers are. All of them had to have been around for Gaster's death, which she couldn't possibly be.
But enough about Gaster. She doesn't know him anyway. Goner Kid, in my headcanon, is Monster Kid's sister, the one he mentions if you choose to insult him when he asks you to, he comments "Huh...? Yo, that's your idea of something mean? My sister says that to me ALL THE TIME" and she resembles him so closely... I just think it'd be adorable as hell. Such an upper of a boy with, well Goner Kid as his sister. But he doesn't think she's a goner, and he's trying to headbutt love into her. She's gotta know he loves her. He'd probably appreciate Frisk getting the chance to cheer her up if you bring her an umbrella, even though it isn't raining, she'll say that it makes her feel a little bit better. And now that his role model is Papyrus, he may have to ask Papyrus how to deal with a sad sibling. Lord knows that Papyrus would know about that.
Monster Kid doesn't like it when she calls herself Goner, but she doesn't like being called by her name (It's Suzy) and she doesn't respond to Suzy. He calls her Sis instead.
She needs a hug, but she'd prefer an umbrella, really.
I drew her with two spikes on the back of her head to emulate the strange two lines.