Debian release code names are derived from the names of characters in the movie Toy Story. Here is a list of Debian releases accompanied by images of their corresponding Toy Story characters,

Debian 1.1 Buzz

Buzz Lightyear, the Space Ranger action figure from Toy Story

Debian 1.2 Rex

Rex, the anxious green plastic T-rex from Toy Story

Debian 1.3 Bo

Bo Peep, the porcelain shepherdess from Toy Story

Debian 2.0 Hamm

Hamm, the wise-cracking piggy bank from Toy Story

Slinky Dog, the spring-bodied dachshund from Toy Story

Debian 2.2 Potato

Mr. Potato Head from Toy Story

Debian 3.0 Woody

Woody, the pull-string cowboy doll from Toy Story

Debian 3.1 Sarge

Sergeant, the green plastic army commander from Toy Story

Debian 4.0 Etch

Etch A Sketch, the drawing toy from Toy Story

Debian 5.0 Lenny

Lenny, the binoculars from Toy Story

Debian 6.0 Squeeze

Squeeze, the toy Aliens from Toy Story

Debian 7 Wheezy

Wheezy, the penguin squeeze toy from Toy Story.

Debian 8 Jessie

Jessie, the yodelling cowgirl from Toy Story 2

Debian 9 Stretch

Stretch, the rubber octopus from Toy Story 3

Debian 10 Buster

Buster, Andy's pet dachshund from Toy Story 2

Debian 11 Bullseye

Bullseye, Woody's loyal horse from Toy Story 2

Debian 12 Bookworm

Bookworm from Toy Story 3

Debian 13 Trixie

Trixie, the triceratops from Toy Story 3

Debian unstable Sid

Sid Phillips, the toy-destroying neighbour from Toy Story