Dion began his acting journey early, landing a role in ITV’s The Snow Spider at just 13 years old. Since then, he has built a diverse and enduring career across theatre, television, film, and voiceover. A graduate of Trinity College St David’s with a BA in Theatre, Media and Music, he later completed a diploma in Acting in 2001, laying the foundation for a lifelong dedication to performance.

With a deep, honest voice and an exceptional gift for characterisation, Dion is a sought-after voiceover artist. His gaming reel highlights his remarkable versatility—able to shift effortlessly from grounded, natural delivery to bold, stylised character voices across genres and moods.

On screen, Dion’s credits include Solomon and Gaenor, Under Milk Wood, Petroleum Spirit, and television roles in Torchwood and The Indian Doctor (BBC), Stella (Sky 1), and a wide range of dramas on S4C including Y Pris, Tair Chwaer, Amdani, Y Glas, Pethau Bychain, and Rownd a Rownd. Younger viewers will recognise him from beloved S4C children’s shows such as Jen a Jim Pob Dim, Y Doniolis, and Ditectifs Hanes.

Dion is a long-standing associate actor at both Theatr Na n’Óg and the Torch Theatre. At Na n’Óg, he has returned again and again since 2004, beginning with Halt! Who Goes There? and continuing through productions such as Kapow!, Aesop’s Fables, Stowaway and Arandora Star. At the Torch, he has brought depth and humour to roles in Pinocchio, One Flew Over the Cuckoo’s Nest, One Man, Two Guvnors, and Of Mice and Men, as well as years of crowd-pleasing Christmas pantos.

His theatre credits also include A Child’s Christmas in Wales, A Christmas Carol and Servant of Two Masters (Wales Theatre Company), Rwan/Nawr (Theatr Genedlaethol Cymru), and Up & Under (Black Rat Theatre Company). Dion has worked extensively in Welsh-language pantomime and continues to contribute to Welsh arts across media.

A skilled writer and voice performer, Dion has also scripted children’s TV sketches and recorded numerous radio dramas. His recent work includes online productions with Theatr Na n’Óg, such as Aesop’s Fables, a radio adaptation of Halt! Who Goes There?, and a streamed one-man performance of Cân Pegi, directed by Christian Patterson.

Dion’s passion, professionalism, and vocal range make him a powerful presence on stage, on screen, and behind the mic.