Bender, an industrial metalworking robot, was built in 2997 at Fábrica Robotica De La Madre (Spanish: "Mom's Robot Factory"), a manufacturing facility of Mom's Friendly Robot Company in Tijuana, Mexico. However, the story of his construction is a mystery. Although different creation processes have been shown, David X. Cohen has stated that the viewer has only been shown Bender emerging from the machine that created him, whilst what happened inside the machine has not yet been revealed. According to one version, suggested by a Hermes flashback, and also by a reverse aging process shown in the "Teenage Mutant Leela's Hurdles" episode, a newborn Bender possessed a baby-like body.
In "Bendless Love", however, Bender is portrayed with a normal, adult-sized body in a flashback sequence conveying his memory of coming into existence. As Bender's memory contains an adult form, the episode's content suggests that the character might actually be recalling a transfer to an adult body, rather than the moment of creation. . . . . . From Wikipedia, the free encyclopedia
Source: Internet, My Collection - Updated 5-14-2012