Luminara was played in Star Wars Episode II by Mary Oyaya and in Episode III by Fay David. She has no lines, and beyond the fact that she’s a member of the Jedi Council we know almost nothing about her. Jedi Luminara Unduli made appearances in both Attack of the Clones and Revenge of the Sith but she’s really just scenery, an example of another alien species in the Jedi order.
Take Jedi Master Luminara Unduli, an easily underestimated Mirialan.
The Star Wars movies introduce a lot of characters, but it would take TV shows like Star Wars: The Clone Wars to bring most of those characters to life.