Fink is a short green humanoid rat. She has lime green fur and long and messy green hair. She has small ears and a long tail coming from her dress. Her scleras are light red, and she has two eyelashes on each eye. She also has a notable sharp snaggletooth on the right side of her mouth. She wears a white lab coat with a skirt, a pair of magenta gloves, and dark gray boots.
Fink has an aggressive attitude as she tends to rough up anyone in her way and insults anyone. She also enjoys mayhem and destruction. Much like her master, Professor Venomous, she enjoys fighting heroes. She is also very attached to her master. Her attachment manifests in an obsession, as she does not let anyone touch his coat, and likes to sniff it in secret.
Unknown, possibly speed, due to her skittering across the table in "We're Captured".
- "Boxmore Infomercial" (debut)
- It was confirmed by Ryann Shannon that she did get ice cream from Professor Venomous in "Boxmore Infomercial."
- She was designed by Ryann Shannon.
- Her name and design might be a reference to the Rat Fink character, like her green fur and bloodshot eyes.
- Her look is similar to Panini from Chowder.