Ian Mackenzie, or "Mac the Knife", was a Scottish Human male who lived in the late 23rd century. He was a pirate. Mackenzie was born in the isolated Federation colony of Inverness, where he earned a living trapping and skinning kossets in the wilderness. However, suspicions arose that he gained most of his kosset skins by poaching them from other trapper's catches, and murdered those who caught him red-handed. While Mackenzie was visiting the colony's starport, a police officer attempted to question him over the accusations. In response, Mackenzie attacked him, and fled aboard an Orion trading vessel.