He is a mercenary and assassin who first appeared in The New Teen Titans (vol. 1) #2 (1980). Wizard magazine rated him the 24th greatest villain of all time. Also, in 2009, Deathstroke was ranked as IGN's 32nd greatest comic book villain of all time.
Originally the archenemy of the Teen Titans, writers have developed him over the years as a villain of other heroes in the DC Universe; parallels have been established between him and Batman, and he has a deep-seated grudge against Green Arrow. The character has been adapted from the comics into multiple forms of media, including several Batman related projects and the Teen Titans animated series.