Rosalina

Rosalina is a minor protagonist in Avengers Endgame. The only other time she appeared as a major character in the canon MCU is in Super Mario Galaxy. She is the mother figure of the lumas.

Appearance
Rosalina has long white hair, blue eyes, and wears a silver crown and blue dress. She holds a wand with a star at the end.

Story
Although she dies early in the Tokyo Arc, she has a large part in Act I. She appears early on into the movie to rescue Ness and Kumatora from being lost in space. She then assists in killing Thanos and lends the remaining Avengers her space station to round up the other Avengers that may be alive. She is crushed by the same building as Mario in Tokyo and never gets to fight any villains after Thanos.