Jamie Jilynn Chung (born April 10, 1983) is an American actress and former reality television personality. She began her career in 2004 as a cast member on the MTV reality series The Real World: San Diego and subsequently through her appearances on its spin-off series, Real World/Road Rules Challenge: The Inferno II. She later transitioned into acting and has since become known for films such as Dragonball Evolution, Grown Ups, Premium Rush, Sorority Row, The Hangover Part II, Sucker Punch, and Big Hero 6. Chung received critical acclaim for her lead performance in the independent drama film Eden. Chung played the lead role in the miniseries Samurai Girl, was a series regular in the superhero drama series The Gifted (2017–19), played the recurring role of Mulan in the ABC fantasy television series Once Upon a Time, and has been a series regular as the voice of Go Go Tomago for the animated Big Hero 6: The Series (2017–21), reprising her role from the 2014 film. In 2020, Chung appeared in the recurring role of Ji-Ah on the HBO series Lovecraft Country; in 2021, she was nominated for an Actors Award as part of the series' ensemble cast.