The Toaster was a good friend of Rob, the Master, who took pleasure in having him see his reflection in his silver faceplate and making faces as he waited for his toast to cook. After the Master left several years ago, the Toaster was one of the few appliances in the house who never lost faith in the Master's eventual return.
One day, while the Toaster and his four friends, Kirby, Lampy, Radio, and Blanky are cleaning the cottage, they see a man outside their window putting up a "For Sale" sign, meaning that the Master wasn't returning. Fed up and refusing to believe that the Master would actually abandon them deliberately, the Toaster declared that he and his troopes would go out to find him. Despite initial reluctance, they all agree and set out into the wilderness. They come across many dangers along the way, but the Toaster manages to maintain hope, even when all seemed lost. Eventually, they are found by an appliance repair man after nearly drowning in a swamp. The repair man tries to dismantle the group but they escape. Finally, they reach the Master's city and go to his apartment. There, they are derided and thrown out by the Master's new appliances, who all believe themselves to be far more modern than the Toaster's group. They are hauled off to the junkyard to await disposal.
Unknown to the Toaster, the Master actually returned to the cottage, hoping to collect his favorite appliances for use in college. When he didn't find them, he and his girlfriend Chris journeyed to the junkyard to dig up some spare appliances, since the Master didn't love the modern appliances as he did his old ones. While there, he finds most of his appliances, who have been dodging an evil magnet crane determined to destroy them. The Giant Magnet nearly causes the Master to get crushed by the Crusher, but the Toaster sacrifices himself by throwing himself into the gears, saving his Master's life. Upon returning home with all of his appliances, the Master fully repairs Toaster and makes faces in his faceplate like he did as a kid. The Toaster and his friends accompany their friend to college, happy to serve him once again.
There is a cameo of Toaster and friends in the series The Oz Kids, in the episode "Christmas in Oz".
The Toaster has a gender confusion controversy, as many fans think the Toaster is either male or female. Ironically, while the Toaster is referred to as "he" in the movies, "his" voice actress Deanna Oliver calls the Toaster "she" and "her."