3.
Plank from "Ed, Edd, and Eddy":
4.
Krum from "Aaaah!! Real Monsters":
5.
Artie, the strongest man in the world, from "Pete & Pete":
7.
Mrs. Nesbitt from "Toy Story":
9.
REPAIR MAN-MAN-MAN-MAN-MAN from "All That":
10.
The Ski-Free monster:
12.
Wilson from "Home Improvement":
13.
The Big Head Mode cheat in "Goldeneye 64":
18.
Powdered Toast Man from "Ren & Stimpy":
20.
A champion on "Guts":
21.
Reptar from "Rugrats":
22.
Oblina from "Aaah!! Real Monsters":
23.
Robbie from "Dinosaurs":
25.
Daria and Jane from "Daria":
27.
And, the scariest thing of all, The "Are You Afraid of the Dark" opening credits: