She is committed to the Brotherhood of Steel's mission and exhibits a no-nonsense attitude when it comes to dealing with threats in the Capital Wasteland. Lyons is a skilled and courageous warrior, leading her unit, Lyon's Pride, in battles against formidable foes.

Despite her authoritative and disciplined demeanor, there are instances in the game where her compassion and concern for the well-being of her fellow soldiers, as well as the people of the Wasteland, become evident. She hates mutants