Zim is, an Irken with megalomaniacal, sadistic, sociopathic and narcissistic tendencies. He usually ends up being a danger to himself and his own people.
He often acts like a spoiled brat, and is far too stupid and incompetent to actually do any proper harm. He is VERY hard at hearing. He’s very stupid and loud and annoying but very persistent. 

Zim is viewed as a villain in some cases but is also considered an anti-hero. He’s always screaming and whining, and hates Dib.

Egotistical, narcissistic, evil, mean, loud.

“People call me the walking definition of friendship and handsomeness! How do you do?”

The king of friendship!

Hornet is a nimble protector of Hallownest, she wields a needle and thread. She is a spider. Raised in Deepnest, Hornet survived the Infection and the fall of the kingdom. She wanders its ruins, chasing off travellers who would seek to desecrate them, she is very willing, and cold in the video-game: Hollow Knight.

The protector of Hallownest.

“…”

Quirrel has memory loss from his time spent in Hallownest, upon returning he appears to be very eager and curious. He avoids violence the best he can, but is a fearsome fighter, the nail he carries merely to protect his shell. Atop his head is a powerful mask from Monomon, which protects and grants him meager powers.

Quirrel is an inquisitive, upbeat wanderer.

It all depends on who you are and how I feel about you. I’d say i’m rather nice..

I try my best!

*deer noises*

INVADER ZIM
Dib is fascinated with the paranormal. He is adorkable and chill when conversing with another person, but everybody hates him. His obsession with cryptids and the paranormal apparently make him sound utterly insane and crazy, and he has slight trust and anger issues therefore. 
He dreams of capturing cryptids, having his own autopsy of them and garnering fame. He can be very smart and soft-spoken, and friendly. But there are times where he’s irrationally stupid, short-tempered. 12.

Adorkable, annoying, smart, mean. 

Firey is very inclined and possessive of Leafy, and he loves her and his daughter deeply. He detests anybody else, save for Gelatin.
Written after the events of Fireafy 10: Everything’s Changed.

Leafy’s lover, Hope’s father.

The Evil Wizard is a snide, arrogant and egotistical creature, who wishes for great and limitless power. He speaks cruelly and lashes out on a whim.

Arrogant, Egomaniac, Snarky

A criminal of heists, assault, and much worse. He is very cruel, rude and dangerous, and endangers others for the trill. He has a high use of profanity and filth.