|Baby Rosalina did not originate from fanon, and more information can be found on their respective wiki(s). You may read more about it on the following wiki(s):|
|The mother of the Lumas as a young child.|
Diaper Duty series
Baby Rosalina will make her first appearance in Diaper Duty 2: The Eggs where she was mentioned as a contender for the next star child after Bowser lost his star status. However none of the other babies knew who she was so a signal beam was sent up by E. Gadd to find her. While the other star child contenders were kidnapped Rosalina appeared and became the seventh star child and helped the other six save Baby Daisy, Baby Waluigi and Baby Funky Kong. Baby Rosalina is cute as ever.
Baby Peach's Turn to Shine
Baby Rosalina will again appear in the third game in the Diaper Duty series Diaper Duty 3: Baby Peach's Turn to Shine. The game is slated for release in 2010. She is a playable character after she is saved.
Piranha Plant Storms
Baby Rosalina appears as a playable character once again in Diaper Duty 4: Piranha Plant Storms. She waits out in space along with Baby Donkey Kong and Baby Peach. The three are the only playable star children in the entire game. She appears to own a Shroom Ship so she can travel between her station and earth at any time.
Koopa Kid Gets Mad
Baby Rosalina is once again playable in Diaper Duty 5: Koopa Kid Gets Mad. Here she appears very out of her element and is found in the Jungle Japes level being held hostage by Prince K. Rool. She is playable after being rescued in the fourth level.
Baby Birdo is Born
In her last playable appearance, Baby Rosalina appears in Diaper Duty 6: Baby Birdo is Born. She is the second character to be playable, she answers Yoshi's distress call straight away and is playable from the second level onwards.
The Nega Star Children
Baby Rosalina appears only briefly as a non playable character in Diaper Duty 7: The Nega Star Children where she relinquishes her star child power amongst the agreement of the other star children to return it to Baby Bowser. She leaves immediately to return to be with the Lumas.
Super Baby Mario Kart
Baby Rosalina appears as a playable character in the Diaper Duty Spinoff Super Baby Mario Kart.
The Lost Island
Baby Rosalina's appearance is once again limited to a cameo in Diaper Duty 9: The Lost Island where at the end she is summoned by the current star children to give them additional strength so she can defeat the powered up Prince K. Rool.
In this game, Rosalina's daughter, Conpernica, identical to baby Rosalina.
Baby Rosalina and Baby Lubba appear in Mario Kart: Double Dash!! 3 as partners.
Baby Rosalina is an unlockable lightweight character in this game. She is unlocked by winning banana cup 150˚cc.
Baby Rosalina appears on Yoshi's Team in New Super Mario Baseball.
Baby Rosalina also appears in Yoshi's New Island 2 as a playable character. She allows Yoshi to gain Flutterwings which enable him to automatically to fly.
Super Mario Revival series
While grownup Rosalina appears in all four seasons of Super Mario Revival, Baby Rosalina first appears in season 3, Super Mario Innocence, and in the final season, season 4, Super Mario War Speed.
Super Mario Innocence
In season 3, Super Mario Innocence, Baby Rosalina plays the biggest role out of all the other baby characters. While other babies, such as Baby Birdo, Baby Donkey Kong, Baby Toadette, and others only make a few appearances, Baby Rosalina holds the Cosmic Key. This mysterious item allows Mario and his friends to travel to the past and save the rest of the babies that are in danger.
Despite being just a baby, Baby Rosalina displays amazing feats of combat, and gets into a few fights to save her friends. She has a few cosmic and space-related powers.
Super Mario Ultra Speed
Baby Rosalina appears in the final season of Super Mario Revival, Super Mario Ultra Speed. She can perform a powerful attack in conjunction with her adult form, called Starlight Cosmic Generations. Upon touching each other's hands, Rosalina and Baby Rosalina shoot two beams of stars and light.
Dry Bones Party series
Dry Bones Party 4 to Dry Bones Party 7
Baby Rosalina is only a miscellaneous character from Dry Bones Party 4 until Dry Bones Party 7. She appears on Mario spaces, where she just puts a Thunder Cloud above the player, forcing them to pass the cloud onto another player before he shrinks them to a tiny size. Her final appearance on Mario's side is in Dry Bones Party 7, as she joins the Koopa Troop st the end of the game.
Dry Bones Party 8 onwards
Starting with Dry Bones Party 8, Baby Rosalina turns to the good side, as she now gives the player 5 Stars to help them win. In Dry Bones Party DS, she debuts as a playable character, which later carries onto future games like Dry Bones Party 9 and Dry Bones Party 10.
Even as a baby, Rosalina is quite mysterious and isn't as loud or whiny as Baby Peach or Baby Daisy. She is quite playful, however, and loves to go kart racing and play in the park. While loving these activities, her most favorite thing to do is sleep.