The green-suited plumber is returning for the second round.
Luigi will be returning as a playable character in Super Mario Galaxy 2, according to Nintendo's Super Mario Galaxy 2 YouTube Transmissions.
The past transmissions have showed off different aspects of gameplay, but the eighth entry reveals Luigi as another playable character.
It is unknown whether or not he will assume his role as the reward for collecting all the stars, or if players will be able to choose him from the start.
We'll find out more as we get closer to Super Mario Galaxy 2's May 23 release date.