The third season of the animated television series Teen Titans, based on the DC comics series of the same time by Bob Haney and Bruno Premiani, originally aired on Cartoon Network in the United States. Developed by Glen Murakami, Sam Register, and television writer David Slack. The series was produced by DC Entertainment and Warner Bros. Animation. Sander Schwartz was tagged as the executive producer for the series. This marks the last season of Teen Titans being aired on The WB Television Network, from September to December 2005, skipping insignificant episodes. It also became the only season that The CW did not re-air during the 2007–08 U.S network television season, as the first two seasons of the series only re-aired on Kids' WB.

Brother Blood is the name of two supervillains appearing in American comic books published by DC Comics. The first iteration, Sebastian Blood VIII, is a power-hungry priest and head of the Church of Blood, as well as the eighth person in the DC Universe to assume the mantle, after killing his father and taking the Brother Blood mantle from him. This tradition had gone on for generations, dating back to the 13th century, when the first Brother Blood was born after obtaining Jesus of Nazareth's prayer shawl and gaining superhuman abilities. As Brother Blood, Sebastian served as a recurring adversary of the Teen Titans, until being killed by his successor, Sebastian Blood IX.