Bass Reeves: the real Lone Ranger was a Federal Marshal in Oklahoma Territory with an Indian sidekick. He spoke several Indian languages and was a master of disguise. He was ambidextrous, could shoot equally well with either hand. He brought many an outlaw to justice. Difficulty? He was born a slave. Despite that, he was well respected by fellow lawmen. Oh yeah, silver was also his calling card, silver dollars. He even had a silver horse for a time.
Edited to add: Bass Reeves made over 3,000 arrests and killed 14 outlaws but was never wounded in 32 years as a Deputy U.S. Marshal, even though his hat and belt were shot off on separate occasions. He once had to arrest his own son for murdering the son's wife. Reeves was once charged with killing a posse cook, but was tried and acquitted.