Rasmus Hardiker is an English actor born in Birmingham, England, on January 31, 1985. He began his career with live-action roles, including a part in the 2005 BBC series The Rotters Club, and later appeared in comedies such as Saxondale and Lead Balloon. While he has maintained a presence in on-screen projects, including the film Your Highness and the television series Krypton, a significant portion of his work is in voice acting for animated productions.

Within the field of anime, Hardiker is known for his work on the English dub of the 2014 series Ronja the Robber's Daughter. In this adaptation of Astrid Lindgren's story, he demonstrated his range by providing the voices for multiple supporting characters simultaneously. He is credited as the voice of Fjosok, Pelje, Sturkas, and Tjorm. This required him to voice distinct members of the rival Borka clan throughout the series twenty-six episode run.

Beyond anime, Hardiker has built a substantial career in childrens animation and family entertainment. He is best known for voicing Scott and Alan Tracy in the rebooted series Thunderbirds Are Go, and for taking over the role of Bill in Thomas & Friends. Other notable voice credits include Alfur in the Netflix series Hilda, Fleeker in Floogals, and Chips in Digby Dragon. He has also voiced characters in franchises such as Danger Mouse and. His notable achievements include being a regular member of the main voice cast for several long-running animated series, demonstrating a consistent ability to perform multiple character voices within a single production as seen in both Ronja the Robber's Daughter and Thunderbirds Are Go.