William Wintergreen

William Randolph Wintergreen is a fictional character appearing in comic books published by DC Comics, often depicted as an associate of Slade Wilson, the supervillain Deathstroke. Although Wintergreen lacked Slade's superhuman physical attributes, he possessed far more combat experience and thus acted as Wilson's mentor.

A former member of the British Army, Wintergreen has received extensive training in military protocols and espionage, making him a proficient hand-to-hand combatant and martial artist. He has also proven an exceptionally skilled marksman in the use of various firearms.