Redmayne recently received a Golden Globe and BAFTA nomination for his turn as serial killer in which he starred alongside He is also widely known for portraying physicist The Theory of Everything, for which he won the Academy Award for Best Actor.

Source: https://collider.com/eddie-redmayne-cast-the-day-of-the-jackal/

The latter even garnered his first Academy Award for Best Actor for his riveting portrayal of Arthur Fleck's journey from a failed clown and struggling comedian to a violent and deranged criminal.

Source: https://collider.com/joker-2-release-date-cast-everything-we-know-so-far/