Editing Cosmo Kramer (section)

===Given and surnames===
Kramer was known only as "Kramer" during the show's first five seasons (from 1990 to 1994). In "[[The Seinfeld Chronicles]]", Jerry referred to him as "Kessler", which was his original name for the show, until it was changed to "Kramer". However, in the first draft of the script, he was named "Hoffman". In a flashback in "[[The Betrayal]]", Kramer says that his name is incorrectly listed as "Kessler" in the apartment building. This [[retcon]]s the pilot's use of "Kessler" as the character's name.

[[George Costanza|George]] finds out his first name of "Cosmo" through an encounter with Kramer's long estranged mom, Babs, in "[[The Switch (Seinfeld)|The Switch]]". For the most part, characters continued to call him Kramer for the remainder of the show's run. The name "Cosmo" was suggested by Larry David; he took the name from a boy who lived in the same apartment building as him and [[Kenny Kramer]].<ref>{{cite video |title=Seinfeld Season 6: Inside Look - "The Switch"|medium=DVD |publisher=[[Sony Pictures Home Entertainment]] |date=2005}}</ref>

The episode titled "[[The Bet (Seinfeld)|The Bet]]" would have revealed Kramer's first name as "Conrad", not "Cosmo", but it was never filmed.