Killian Jones
Captain Killian Jones was a pirate, known for traveling all over, when he met Rumplestiltskin's wife, Milah. She had lost any feelings she'd had for her husband, especially when he returned from The Ogre Wars in shame as a coward, and fell in with Captain Jones and his crew. The meek and frightened Rumplestiltskin begged Killian to release Milah back to him, but the Captain insisted that they duel for her instead. Rumple was too afraid to risk a duel with the deadly pirate, so he left to raise his son, Baelfire, on his own. Years later, after he had become the new Dark One, Rumplestiltskin stumbled upon Captain Jones again. This time he was more than happy to duel, thanks to the magical powers he now posessed. Killian bravely fought a losing battle, but just as Rumplestiltskin was about to tear out his heart, Milah appeared to make a deal. She had fallen in love and had been living with Captain Jones the whole time, and now they had a magic bean that could transport them to another world. She offered it to Rumple in exchange for Killian's life. Rumplestiltskin seemed to accept, but when Milah admitted that she had never loved him, he tore her heart out, killing her. Then he cut off Killian's hand to retrieve the bean he held. Killian attacked Rumple with a hook, but it was not enough to hurt The Dark One. The Captain swore he'd have revenge for the murder of his beloved and for his hand, but Rumplestiltskin taunted that he would never live long enough to find a way to kill him. But Captain Jones had tricked The Dark One. He still had the magic bean and used it to open a portal to Neverland, where he would never grow old, giving him all the time he needed to plot his revenge.

After the casting of The Dark Curse, Killian conspired with Cora to find a way to get to Storybrooke and get his revenge there.

Colin O'Donoghue
Colin has had roles in several series including 24 and The Tudors. He also had a role in the feature film The Rite with Sir Anthony Hopkins.