Melissa Roxburgh (born December 10, 1992) is a Canadian and American actress. She is known for her roles in Diary of a Wimpy Kid: Rodrick Rules (2011) and Diary of a Wimpy Kid: Dog Days (2012), as Ensign Syl in the 2016 film Star Trek Beyond, as Olivia Tanis in The Marine 4: Moving Target., and as Michaela Stone in the NBC/Netflix science fiction drama series Manifest.
Roxburgh is the second oldest of four children; she has two sisters (Kristie and Ashley) and one younger brother (Matt). Her father, Cam, is a Canadian pastor, and her mother, Shelley Walpole, is a British retired professional tennis player. Her parents, after moving to Canada from the United States, founded a church in Vancouver. After graduating from high school, Roxburgh began pursuing acting in Vancouver. Roxburgh is an alumna of the William Esper Studio.
She landed her first major role in Diary of a Wimpy Kid: Rodrick Rules as Rachel. She went on to also appear in the second sequel of Diary of a Wimpy Kid, Dog Days, but as a different character, Heather Hills. Her other work in films has included Big Time Movie, Jeni in Leprechaun: Origins, and Ensign Syl in Star Trek Beyond. Her television work has included the Supernatural spinoff, Bloodlines, and Thea in The CW's drama series, Valor.

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