Ravager is an alias used by multiple fictional characters appearing in comic books published by DC Comics. Most appear in series featuring the Teen Titans and have a connection to the villain Slade Wilson / Deathstroke. The name has also been used by the unrelated super-hero team The Ravagers.
Bill Walsh battling Deathstroke, in Deathstroke, the Terminator #4. Art by Mike Zeck
Deathstroke is a supervillain appearing in American comic books published by DC Comics. Created by writer Marv Wolfman and artist George Pérez, the character debuted in The New Teen Titans #2 as Deathstroke the Terminator.
Slade as depicted in Teen Titans
Deathstroke as depicted in Batman: Arkham Origins (2013)
Image: Titans Deathstroke