Jason Todd, who goes by the alias of Red Hood, is on the outside is arrogant, sarcastic, snarky, cheeky and can even be quite cruel, but on the inside is actually quite self-loathing.
A smart, cunning, highly skilled and talented vigilante trained by Batman and was formerly the second Robin, although that's a secret. Following his murder at the hands of the Joker and subsequent resurrection, Jason now kills convicted murders and villains, although is willing to die to protect an innocent life.