Little Green Men

The Squeeze Toy Aliens, or Pizza Planet Aliens a.k.a. Little Green Men (or LGMs for short), are a bunch of 3-eyed space aliens voiced by Jeff Pidgeon in Disney/Pixar's 1995 film Toy Story and its sequels, Toy Story 2 (1999) and Toy Story 3 (2010) They later appear as minor characters in the film, Buzz Lightyear of Star Command: The Adventure Begins, and the subsequent animated series.

Personality
In the Toy Story films, the Little Green Men appear to be promotional toys for Pizza Planet, as they wear uniforms with the restaurant's logo. They are known for their near-worship of "the Claw," the claw of the game they are a part of.

In Buzz Lightyear of Star Command, they are an actual alien race, many of whom work for Star Command as scientists. All LGMs have a telepathic link to one another, which is powered by an object on their homeworld, which is known as the Uni-Mind. Without it, the LGMs have trouble thinking clearly.

Toy Story
In the first film, these identical Alien toys are prizes in a game of skill at the Pizza Planet restaurant, and each one believes that "The Claw" will somehow choose one of them to "go on to a better place." When Sid Phillips plays the game, he wins one Alien toy before spotting Buzz and Woody underneath it. The Aliens foil Buzz and Woody's attempt to escape the machine, not wanting them to disrupt The Claw. Sid then fishes Buzz and Woody out and takes the three toys home with him. Later at his house, Sid uses the same Alien toy as a gift for his dog Scud to savagely chew on, much to Woody and Buzz's horror. Near the climax of the film, the damaged Alien makes its presence known after coming out of hiding to scare Sid along with the other toys so he doesn't torture them ever again.

Toy Story 2
In the second film, Andy's toys (who were on a mission to rescue Woody) encounter three toy Aliens inside a Pizza Planet delivery truck that they hijack to chase Al to the airport. During the chase, the Aliens fly out of the window but are pulled back in by Mr. Potato Head, and the Aliens become quite attached to him. Their unison catchphrase is: "You have saved our lives. We are eternally grateful." After the toys return home, Mrs. Potato Head chooses to adopt the three Aliens as her children, much to her husband's dismay. They are last seen listening to Wheezy singing "You've Got a Friend in Me."

During one of the bloopers, whilst the camera focus is being checked, the three discuss if any of them made it into the first Toy Story. One claims if you look at the letterbox copy, their arm is grabbing Woody's ankle. The same one then states that he's been offered to play a villain in a toothpaste ad, which greatly impresses the other two.

Toy Story 3
In the third film, these same three Aliens are first seen in Andy's realistic play scenario, serving as evil accomplices of One-Eyed Bart and Betty, providing transportation for their escape by a pink corvette. The corvette is sliced in half by Buzz Lightyear's laser, and One-Eyed Bart protects himself, his wife and the Aliens by summoning his "Attack Dog With a Built-In Force Field." The villains get abducted by Evil Dr. Porkchop.

Back to reality, the Aliens still say their message of gratefulness to Mr. Potato Head, much to his annoyance. A little later, they join the rest of Andy's toys at Sunnyside Daycare. After enduring a rough playtime from the toddlers in the Caterpillar Room, the Aliens and the other toys attempt to escape, only to end up in the city dump. Just as the other toys were about to be incinerated, the Aliens use a crane to save them all, declaring, "The Claw!" Mr. and Mrs. Potato Head use their exact same words they have said to Mr. Potato Head in the second film to express their gratefulness, and Mr. Potato Head finally accepts them as their children. They are ultimately donated to Bonnie at the end of the film.

In the end credits, they are seen being juggled by Totoro, to the amusement of their "adoptive parents." Later, one of the aliens plays Juliet with Mr. Pricklepants playing Romeo in their rendition of Shakespeare's Romeo and Juliet. Finally, the aliens are among an audience of toys who enjoy watching Buzz and Jessie perform a paso doble to "Hay Un Amigo En Mi," the Spanish version of "You've Got a Friend in Me."

Toy Story That Time Forgot
The Aliens return in Toy Story That Time Forgot, but have no speaking lines.

Buzz Lightyear of Star Command
In the Buzz Lightyear of Star Command continuity, the LGMs work for Star Command as scientists and inventors. At the beginning of the pilot film, 3 LGMs have gone missing, and Buzz Lightyear and his partner Warp Darkmatter are tasked with finding them. Buzz is able to track the LGMs to a torture tank located in a hidden outpost of Emperor Zurg's. Though Buzz is able to rescue the LGMs, his partner apparently dies.

Later, the LGMs present Buzz with a new partner, XR. He is a robot soldier who is programmed to learn from Buzz. According to the LGMs, a robot partner was perfect for Buzz, who had turned down other potential partners as a result of losing his last one, as XR could be rebuilt if destroyed. Soon after, the LGM homeworld is invaded by Zurg. There, Zurg steals the Uni-Mind, an object which telepathically links all LGMs. As a result, the LGMs become unable to clearly think. This affects them as they rebuild XR, who had been destroyed in the attack. Instead of being a blank slate, the confused LGMs make the new XR a genius. Thankfully, Buzz, along with beautiful fellow ranger Mira, XR, and a janitor named Booster is able to retrieve the Uni-Mind from Zurg, who had intended to use it to control the minds of everyone in the galaxy. Afterwards, the LGMs link is restored and the LGMs return to normal.

Toy Story Racer
A Squeeze Toy Alien is a playable character in the Toy Story Racer video game under the name "Little Green Man".

Kingdom Hearts III
In the new trailer shown at Disney's D23 Japan, Sora is holding two blasters of the Little Green Men from the Buzz Lightyear Astro Blasters attraction, hinting they might appear in the game.

Disney Friends
One of the Little green Men appears in this game in the practice room.

Disney Parks
The Little Green Men are seen at Disneyland's Buzz Lightyear Astro Blasters.

They are also seen at the Magic Kingdom's Buzz Lightyear's Space Ranger Spin.

Toy Description
From Official Website:
 * "Often heard exclaiming "ooohh!" in unison, the three green, multi-eyed squeak-toy Aliens now revere their adoptive parents, the Potato Heads, instead of the Claw - because Mr. Potato Head saved their lives, and they are eternally grateful."

Trivia

 * At one point while making the original Toy Story, the characters in the claw machine would have been plastic pizza slices with sunglasses instead of Aliens.
 * It is uncertain if the Aliens in the second and third films were also from the claw machine in the first film.
 * In Toy Story 2: The Video Game, the aliens are also sold at Al's Toy Barn, and their box names them Mr. Martian. A mothership also lost a few of these Aliens, which it needs to return home.
 * The line "Use the wand of power" may be a nod to the line "Use the force" from Star Wars.