I will never forget you. Even when I someday become a star myself... I will never forget you, Mario! Never! Ever! I won't forget!
„
~ Baby Luma
Tyke, also referred to as Apricot Luma, Baby Luma,Young Master Luma or simply Luma, is the deuteragonist of Super Mario Galaxy and one of the two deuteragonists of its sequel, Super Mario Galaxy 2 (alongside the Co-Star Luma). He is Rosalina's adoptive son and Mario’s partner in his adventures across the Galaxies.
Baby Luma was found in a rusted spaceship by a young Rosalina. He tells Rosalina he is looking for his mother, who is coming for him on a comet. Rosalina promises to wait with him, and that night, she used her father's telescope to look for Luma's mother, but there was no sight of the comet. Rosalina and Luma decided to go look for Luma's mother themselves by using the rusted spaceship.
During their journey, they find a comet, but Luma's mother was nowhere to be found there. The pair decided to stay in the comet for a little while.
After Rosalina dreams about losing her mother and starts crying, Luma starts crying as well, before Rosalina calms him down. She says to Luma that she will take care of him.
The next day, Rosalina and Luma made a house of their own.
One day, several Lumas come out from a apricot-colored planet. Rosalina decided to move the Lumas in the new house once she had finished naming them all.
After seeing the 100th comet, Rosalina wonders if her home planet was still as blue as it was. She used her father's telescope and saw a terrace which used to be her home. She started remembering the memories she had with her brother, father and mother, but when she remembered her mother, she started bursting into tears.
Luma tried to comfort Rosalina by saying that her mother is a part of her, but Rosalina was unable to stop her tears. Then, Luma gets an idea. He could transform into a soaring comet that will carry Rosalina and all the Lumas on the journey. Luma emerged, reborn as a comet. He flew towards Rosalina's home planet.
In the final chapter of Rosalina's storybook, there is a new Luma in Rosalina's new family. It is possible it is the same Luma Rosalina traveled with.
Super Mario Galaxy[]
Luma is seen with Princess Peach in the Mushroom Kingdom. It is presumed that he fell out of the Comet Observatory during Bowser's attack and crashed at the Mushroom Kingdom. Peach had possibly found him, somehow figured out of his powers and decided to give him to Mario.
Bowser attacks the Mushroom Kingdom during the Star Festival, kidnaps Peach and her castle, and sends Mario away. When Mario gets sent away, Luma leaves Peach and flies to save Mario. He then wakes Mario up in the Gateway Galaxy and plays with him as he turns into a Star Bunny. After playing their game, Baby Luma and two other Lumas introduce to Mario their adoptive mother Rosalina. Rosalina gives Luma to Mario, entrusting Mario with his care. Luma grants Mario the spin ability, and the two explore space to collect the stolen Power Stars and Grand Stars.
After Mario saves the last Grand Star, Bowser's planet explodes and becomes a supermassive black hole. Luma, knowing there was no way out of it, waves goodbye to Mario and sacrifices himself alongside the other Lumas to stop the supermassive black hole.
In the secret ending, which is obtained after collecting all 120 stars, Rosalina leaves the Gateway Galaxy while leaving a leafy Starshroom behind. Inside there was Baby Luma, possibly reborn.