Dion Marcos won Best Actor at Lancaster International Film Festival for his short film 'Survivor' 2025 in which he starred, wrote and produced. Dion can be seen in Irish feature film 'Tradition' (2019) on Amazon Prime. Dion was cast as a minor role in ITV Series 'The Reckoning' (2023) alongside Steve Coogan . He has starred in a few notable short films such as a lead role in 'Musketeer' (2022) alongside Kevin McNally. He has most recently finished up a lead role in a short film 'Where The Trees Grow' and 'The Devil Is In The Detail' due to come out this year. Dion is from Killarney, Ireland but bases himself between London and Dublin.

In addition to acting, Dion is a high-level sprinter as well as a trained boxer. He is also trained in stunts/combat/weapon handling.