Jason Peter Todd is a character appearing in American comic books published by DC Comics. First appearing in Batman #357 in March 1983, he was created to succeed Dick Grayson as Robin, Batman's partner and sidekick. He initially shared a similar origin to Grayson, being the son of circus acrobats who are killed by criminals in Gotham and adopted by Bruce Wayne/Batman as his son and protege. Following the Crisis on Infinite Earths event and the rebooting of DC's main comics universe, Jason's origin was changed to being a pre-teen street urchin and petty thief who Bruce adopted and took under his wing after finding the boy attempting to steal the tires off of the Batmobile. This origin has since become the standard for subsequent iterations of the character.

Robin is the alias of several superheroes appearing in American comic books published by DC Comics. The character was originally created by Bob Kane, Bill Finger, and Jerry Robinson, to serve as a junior counterpart and the sidekick to the superhero Batman. As a team, Batman and Robin have commonly been referred to as the Caped Crusaders and the Dynamic Duo. The character's first incarnation, Dick Grayson, debuted in Detective Comics #38. Conceived as a way to attract young readership, Robin garnered overwhelmingly positive critical reception, doubling the sales of the Batman titles. Robin's early adventures included Star Spangled Comics #65–130 (1947–1952), the character's first solo feature. He made regular appearances in Batman-related comic books and other DC Comics publications from 1940 through the early 1980s, until the character set aside the Robin identity and became the independent superhero Nightwing.