Vorticons are fictional alien creatures from the video game series Commander Keen, created by id Software. They are known for their distinctive green skin and large, expressive eyes. Vorticons serve as the primary antagonists in the first three episodes of the series, where they attempt to conquer the galaxy. In the games, players control Billy Blaze, a young boy who becomes the space hero Commander Keen. The Vorticons are often depicted as bumbling yet dangerous foes, providing challenges for players as they navigate through various levels and solve puzzles to defeat them and save the day.