The youngest Original brother, Kol Mikaelson, played by Nathaniel Buzolic, is stiff competition for his brother, Klaus in the mischievous department. We weren't introduced to this brother until the middle of the third season. Klaus daggered him and stuck him in a coffin in the 1920's. His behavior was almost understandable after spending 90 years stuck in a box. His partner in crime, as we see during the Mikaelson family ball, is his younger sister, Rebekah. The plan was to kill Matt Donovan, but when he was really sweet to Rebekah she decided to spare him. Kol was unimpressed and took matters into his own hands. At just one event, he broke Matt's hand and then fought with Damon Salvatore. Later on in the season, we see his violent nature again. He beats Damon multiple times with a baseball bat. The first time was just because he could, and the second was his way of getting revenge for his brother dying. Nathaniel gave away some behind the scenes information from when they were filming the episode with the bat scene. During one of the takes, the wooden bat broke and a piece flew straight for Ian Somerhalder's head. Thanks to quick reflexes, any possible injury was avoided. Another mishap occurred when he had to hit the stunt double in the face with a new bat. Just one hit and the man's nose was broken. Taking a bat to the face can clearly cause some serious damage! Kol has been gone since that episode, but everyone is hoping to see him again in season four.