Sir Robin
Sir Robin the Not-Quite-So-Brave-as-Sir-Lancelot was a knight of Camelot. He knew karate, so his body and mind could legally be considered weapons.
The best way to defeat your enemy is to make him your friend. The worst way to defeat your enemy is to kill him, because you can't kill ideas and you make martyrs. Sir Robin's method of choice is somewhere in the middle (not always in the same place).
Robin was recruited into the Knights of the Round Table by Arthur, King of the Britons in AD 932. Arthur was charged with the quest to seek the Holy Grail, so the Knights split up to search for it (Not in a permanent way, though. They all rejoined forces again later.). While leading a small band of minstrels, Robin encountered the Three-headed Giant. He defeated him (them?) by running away (bravely).
Even though he pretty much failed as a knight, he was more successful in vigilantism. In the 2010s, Robin was at a movie theatre with a woman named Wanda or Wendy when he saw a guy named St3v3n dropping a pigeon. Robin beat him up, but it was okay because St3v3n was committing a crime. Then Robin went to the police, where he helped them catch St3v3n.
However, Robin also stole badges from them, so he got kicked out.