Melissa Roxburgh: Melissa Roxburgh. Actress: Star Trek Beyond. Melissa Roxburgh is a Canadian 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.