Gwen Grayson

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Gwendolin "Gwen" Grayson, previously known as Sue Tenny, with the villain ID of "Royal Pain", is the main antagonist of the 2005 Disney live action movie Sky High, played by Mary Elizabeth Winstead.

Story
Sue Tenny was the "weird" student at Sky High, at the time the Commander and Jetstream (Will Stronghold's parents) were students of the same school. Always being called the "Mad Scientist" by the other students, as nobody could understand what a "technopat" was at the time. Sue was later unmasked teaching supervillains at the school without the teachers's knowledge, and was defeated by the Commander when he used her own weapon, The Pacifier, against her. However, she survived, as the laser turned her into a baby. Sue was later raised by Stitches, adopting the name of Gwen and planning her revenge against the Stronghold family.

Role in Sky High
Years later, she tricked the Commander and Jetstream's son, Will Stronghold, to turn on his childhood friend, Layla, and dance with her in the School Ball's Night. She revealed herself as Royal Pain and turned every hero, including the teachers, into babies, but was finally defeated by Will when he broke her helmet, knocking her unconscious. However, she still managed to disable Sky High's gravitational generator, but once again failed. She is seen arrested with the other bullies in the epilogue, begging to take to solitary. Will states that she became his arch-enemy after the events of the movie.