Babyface

Babyface, also known as Spider Baby, is the leader of the mutant toys in Sid Phillips' room who appears in Toy Story. Babyface is constructed from one of Hannah's baby doll heads atop a spider-like body made from an erector set. He is a focal character.

Toy Story
Babyface used to belong to Hannah, and was one of Sid's first mutant toys. Babyface was first seen when Woody was searching for a way out of Sid's room. The appearance of the mutants alone sent Woody running back to the top of Sid's bed with Buzz. Babyface, along with the other mutants, crawled out of their hiding places, and swarmed around the remains of Janie and Pterodactyl, leading Woody and Buzz to believe they're cannibals.

Babyface also leads the rest of the mutant toys to confront Woody and Buzz the next morning, but they are drove away by Buzz's karate chop action. After Woody takes a broken Buzz back to Sid's room while Woody tries to plan an escape out the window, he notices the mutant toys are now crowding around Buzz. Babyface takes Buzz's arm from Woody, who thinks they're going to eat him. Woody's attack is stopped once he realizes they repaired him, as well as Janie and Pterodactyl. He later retreats with the others once Sid is heard. With Buzz planned to be blown-up by Sid, Woody has no choice but to call to Babyface to help save him. In response to Woody's emotional plea, he bangs on Sid's bedpost in Morse code to call for the other toys to help Woody. Woody gives them a plan, and they set it into motion by heading towards the backyard.

Right when Sid is about to light the fuse for the rocket attached to Buzz, Woody interferes. He tells Sid about how toys are alive, and don't like how he's been treating them. At this time, all the toys Sid abused rise up and circle around him. Babyface scares Sid by being suspended onto Sid's head by Legs from the clothesline. Once Sid has been scared out of his wits, Babyface is seen moving its head up and down as the mutant toys rejoice.

Toy Story Treats
Babyface has appeared in some of the episodes (even though he's not one of Andy's toys).

Trivia

 * Big Baby from Toy Story 3 has a broken eye which is a possible reference to Babyface.
 * Big Baby's Swedish name is Babyface.
 * Babyface makes a cameo in the popular Cartoon Network series, Foster's Home for Imaginary Friends, in the episode, "The Bloo Superdude and the Potato of Power". He appears as a keychain on Bloo's motorcycle in a dream sequence.
 * His name is a coincidental reference to Baby Face Nelson.