She is active on the convention circuit, and both sings and plays the accordion in the band Molotov Jukebox. After Harry Potter, her biggest role has been as Osha the Wildling on Game of Thrones, and her performance influenced George R. R. Martin to expand Osha's role in later books of A Song of Ice and Fire.
- About a Boy (2002) as Ellie
- Harry Potter and the Order of the Phoenix (2007) as Nymphadora Tonks
- Harry Potter and the Half-Blood Prince (2009) as Nymphadora Tonks
- Othello (2009 production) as Desdemona
- Womb (2009) as Rose
- Harry Potter and the Deathly Hallows (2010-2011) as Nymphadora Tonks
- Game of Thrones (2011-2016) as Osha
- Tonight Youre Mine (2012) as Morello
- Black Mirror: White Christmas as Jennifer (2014)
- The Refugees (2015) as Emma.
- Cute Clumsy Girl: Has played at least one with Tonks.
- Friend to All Children: At Florida Supercon, a fan came by with her baby. Tena literally stopped everything so she could take a picture with the baby.
- Harsh Vocals