Official summary
Don Quixote is one of the twelve Sinners. ProjectMoon’s manual describes her as exceptionally passionate and given to grandiose ideas.
Fixer enthusiasm
Her profile identifies her as an avid enthusiast of Fixers. She carries Fixer-related merchandise and adopts the exaggerated manner of a righteous Fixer. The manual explicitly says the decorations do not change her combat performance.
Scope of this page
The official profile recommends playing along with her performance to keep missions moving smoothly. This page stays with that spoiler-light introduction and does not fold later story revelations into the basic profile.
Current Don Quixote Identity rankings are also outside scope because a useful ranking needs a defined patch, mode and tested comparison set.