Mario talking to a Cosmic Guide.

Cosmic Guide is a feature in Super Mario Galaxy 2. It is characterized as a cosmic version of Rosalina. It can appear in any level of the game if the player lose too many lives on the level. The player will be able to ask the Cosmic Guide to beat the level for them. Unfortunately, when a Cosmic Guide beats a level for the player, they won't get a gold Power Star, but a Bronze Star that doesn't assist the player in unlocking the Grandmaster Galaxy.