Sharpay Evens is probably seen as the main antagonist in the High School Musicals. However, she may just be misunderstood. Sharpay knows what she wants and has the resources to get it almost all the time. The problem comes when she acts without thinking about how she is affecting her peers.
In HSM 1, Sharpay is just doing her normal thing, trying out for the winter musical(knowing she’s going to get the main role) and flirting with Troy. When 
newcomer Gabriella tries for the musical out with Troy, Sharpay is immediately put off to Gabriella. She tries multiple things to make sure that Gabriella and Troy can’t get the part. Despite all her clever “tricks”, Troy and Gabriella still find a way to get the part. Sharpay is embarrassed but is able to get over it and ends up feeling happy for Troy and Gabriella.
In the summer before their senior year, almost all of Troy’s team, Gabriella, and many of her friends go to work at Lava Springs. When they get there, they realize Sharpay’s parents own the resort. Sharpay can basically do and get whatever she wants here. She 
soon realizes that she can give Troy something that he has been really insecure about: college. Sharpay’s father is on the board of directors at Troy’s dream college and he can insure Troy a spot on that basketball team with a scholarship. Sharpay uses this to make Troy promise to sing with her. During all of this she is basically breaking Tory and Gabriella up. In the end, she is let down by Troy but they all figure out what they really want, and work things out.
In HSM 3, their senior year, the main focuses are on the Senior Year Musical. This year, the musical is more of a team effort. Gabriella and Troy are the main role, and Sharpay is Gabriella’s understudy. When Gabriella has to leave high school to go to an early enrollment program at Stanford, Sharpay finally has her chance to sing with Troy. However, she doesn’t realize that Troy is gone too! She ends up having to sing with “Rocket Man” who is, let’s just say, not Troy. At the end of the year, Sharpay announces that she is going to go the University of Albuquerque and is going to come back to East High to help out with the musicals. 
Were all in this together 