Alter in Apex Legends • Avatar: The Last Airbender • Doctor Who: Legends of the Sea Devils

Crystal Yu is a British-Chinese actor and voice artist best known as the voice of Alter, the dimension-hopping chaos agent in Apex Legends. Introduced in Season 21, Alter is a Void-wielding Legend with a mysterious past - a thrilling fit for Crystal, whose performances are laced with precision, wit, and danger.

On screen, she commanded the high seas as the legendary Pirate Queen Madam Ching in Doctor Who: Legends of the Sea Devils and will soon appear as Lady Beifong in Netflix’s highly anticipated Avatar: The Last Airbender Season 2.

Crystal’s game credits span realms both grounded and surreal — from Li Tian Ning, the 'Sky Goddess' and Imperial tactician in Skull and Bones, to Mercurial, a razor-sharp speedster hero in Capes. She has also lent her voice to characters in Diablo IV and other AAA and indie games - with a few exciting new titles currently under wraps.

She has appeared in fan-favourite series such as Good Omens and The Sandman, further cementing her presence across beloved fantasy and sci-fi universes.

After years of keeping a low profile, Crystal is stepping into the spotlight of the convention world - ready to connect with fans, share stories, and bring a touch of the Void with her - minus the portals (probably).