Comet Tico

The Prankster Comet Luma is a special Luma found in Super Mario Galaxy and its sequel, Super Mario Galaxy 2. It appears as a purple Hungry Luma that holds up two stars on sticks in each hand, similar to a Hungry Luma holding up Star Bits. It is located on the left of the Comet Observatory, between the beacon and the Terrace, and only appears after Mario has gotten thirteen stars, causing the Prankster Comets to appear. When Mario talks to the Prankster Comet Luma, it will give Mario two options.

The first option is to inform Mario about the various Prankster Comets. This appears onscreen as an option called Tell Me More! The Prankster Comet Luma will concisely tell Mario about the four comets: Speedy Comets, Daredevil Comets, Cosmic Comets, and Fast-Foe Comets, and the effects they have. Additionally, once Mario has beaten the game once, the Prankster Comet Luma will tell Mario about the fifth variety of comet, the Purple Comets. This option does not require any Star Bits.

The second option is to change the position of the comets at the various galaxies that Mario has visited. Once Mario pays 20 Star Bits, the Prankster Comet Luma will flash and turn the screen white. A second later, the screen will show a map, indicating the new Prankster Comet positions. When Mario has only done a few Prankster Comet missions, the Prankster Comet Luma will give new Comets to new galaxies. When Mario has already done many of the Comet Missions, the Prankster Comet Luma will only repel all of the Prankster Comets, leaving none available; when Mario uses this option a second time, the Comets will all come back.