Marcus (played by Travis Fimmel) is one of the main characters of the HBO Max show Raised by Wolves.  He is a follower of the Mithraic faith, and eventually becomes the leader of a group of humans who have relocated to the planet Kepler-22b in order to escape an Earth ravaged by war.  Marcus finds himself in conflict with Mother, an android who was previously sent to Kepler-22b with Father and human embryos in an effort to begin populating the new planet.  Marcus' clothing is tactical in feel and mostly white.  If you have some skill with a paintbrush, you could paint the Mithraic sun symbol onto a white tunic.  Otherwise, a Crusader costume will help evoke the same feel.  For a little extra detail, use an FX kit to recreate the scarring on the right side of Marcus' face.

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