5P4M

Has weird, distorted speech

Uses pretty much any pronouns.

Acts overly familiar, calling people 'friend', 'pal' or 'buddy' a lot, even if she doesn't know them.

Teleports around, sometimes randomly. Often keeps teleporting to remain in someone's field of view if they try to ignore it.

Malicious? Annoying? Who knows? Despite how much it talks, it isn't really clear what it wants to accomplish or why.

Literally everyone who's ever met this idiot hates them. They're even more hated than Pop, which is quite an accomplishment. To be fair, they're a lot bigger than Pop, who's pretty small and non-threatening.

Always smiling. Maybe he can make other emotions, but nobody's ever seen them. Probably not a good idea to try to make this thing angry.

Very fast and agile. When not teleporting around, it can float through the air at a good speed, and can sprint even faster. Likes to appear in unexpected places, like inside of cupboards, on top of things, or on the ceiling, jumping down to talk to someone.

Can contort her body in unnatural and unnerving ways, rotating her head a full 360 degrees with seemingly no issues, bending limbs in ways they don't look like they should bend, etc.

Tall, towering over a lot of people, which really adds to the unnervingness of them.