Katheryn Winnick (born December 17, 1977) is a Canadian actress. She is known for her starring roles in the television series Vikings, Wu Assassins, Big Sky, and her recurring role on the television series Bones.
When he holds up the magical Sword of Power and utters the words "By the power of Grayskull," Prince Adam is transformed into Eternia's greatest champion, He-Man, who uses his powers to defend the realm from Skeletor and his evil forces.
