Willaume spent several years at the
Royal Danish Theatre, Copenhagen before realising it was not meant to be, and made him seek television and film roles. In 2016, Willaume was cast in Marek Novotny for six episodes of the
Julie Summers Jambusters based British wartime drama series
Home Fires. In 2017, Willaume starred as Captain Kris in the
Luc Besson directed
Valerian and the City of a Thousand Planets, in a cast which included
John Goodman,
Dane DeHaan,
Cara Delevingne,
Rihanna,
Ethan Hawke, and
Rutger Hauer. In the same year, he played a main role of Hans in the film
Good Favour which featured at the
2017 Toronto International Film Festival. In 2018, he starred in the film
Tomb Raider working with
Alicia Vikander who played
Lara Croft. In 2019, in the
Viaplay series,
Hidden: Förstfödd (Hidden : Firstborn), Willaume plays Maersk, and is the only Dane amongst a cast of Norwegians and Swedes, he considered this to be his most interesting work to date. In 2021, he guest starred in the
Amazon Prime fantasy series
The Wheel of Time, in a cast which included
Rosamund Pike, and appeared in every episode of the
Netflix period mystery-science fiction series
1899 in 2022. ==Filmography==