Casting features primarily white British and Irish actors like Tom Sharp as Merlin, Rose Reid as Charis, and Brett Cooper as Ganieda, fitting the Roman-occupied Britain setting without race-swapping, gender-swapping, or forced DEI that clashes with source material; minor diverse actors like Emree Franklin as Morgain appear organic and non-focal. Themes center on Merlin's Christian conversion, faith, heroism, and historical oppression in ancient context (slavery, invasion), presented traditionally without modern lectures on systemic racism, identity politics, or patriarchy critiques.

No creator statements push activism; instead, promotion highlights anti-woke authenticity. Audience and reviewer reactions, including from anti-woke outlets like Worth it or Woke?, praise the absence of progressive messaging, with X posts calling it 'faithful... no forced diversity or woke messaging' and a 'positive depiction of Christianity.' No significant backlash labels it woke; pre-release hype hoped it would break the DEI mold, and post-release impressions confirm traditional storytelling focused on entertainment and epic adventure.