The shape-shifting mutant known as Mystique appears in all five of the main X-Men movies. She's played by Jennifer Lawrence and Rebecca Romijn, along with 34 other actors for all the times Mystique transforms. Her favorite victim is undoubtedly William Stryker who she impersonated 5 times (that we know of). The directors of the X-Men franchise (mostly Bryan Singer) are so in love with Mystique that her transformations have been shoehorned into every conceivable corner of the quintology. It's almost like they have a Mystique addiction.
This list compiles every single one of her transformations in the X-Men film series so far. In total, she assumes different appearances 46 times in X-Men, X2: X-Men United, X-Men 3: The Last Stand, X-Men: First Class, and X-Men: Days of Future Past with undoubtedly more to come in X-Men: Apocalypse. That's a lot of impersonations, but we've got them all tracked in this list of every time Mystique impersonated someone in the X-Men movies.Disclaimer: All timecodes provided for X-Men: Days of Future Past refer to the extended "Rogue Cut" version.
When: 31 minutes into X-MenHenry Gyrich is a major villain in X-Men comics, but here, his name is attached to a forgettable advisor to Senator Kelly. Mystique's impersonates him to kick said Senator in the face. see more on Henry Peter Gyrich
When: 44 minutes into X-Men
Mystique poses as Bobby Drake to guilt Rogue into leaving the school. It works! It's also possible that she was impersonating Iceman a few (screen) minutes earlier when Rogue was sapping Wolverine's healing power.She remains cloaked as Iceman to access the X-Mansion's basement.
Also Rankedsee more on Iceman
When: 59 minutes into X-MenIn a close-up that betrays the (relative to the other films) low budget of X-Men, Mystique switches out her eyes to access Cerebro and inject some non-specific bad juices into it to knock out Professor Xavier.
Also Rankedsee more on Professor X