A member of the Blue Sky Union, a band of aerial defense experts and upper grade flight school (commonly referred to as 'the Guild') in bourgeois America, Marc feels as one with her aircraft - the mobile, dependable Red Barrel. She presents herself as youthful and naïve, but with a strong sense of righteousness and justice, willing to do whatever it takes to ensure things are in her interests, or of those she cares about. She was attracted to this alternate world when the aforementioned pink gremlin stole dangerous explosive munitions from her.

Marc, like QP, is in her mid-teen years. She's confident and upbeat, and is in good control of her emotions, but is sometimes vulnerable to slight frustration. For the most part, she is very firm in the decision-making department. This should all be reflected in her voice. Of the North American range, a mild Midwestern accent is preferred, but not necessary.

Required for this role are some vocal-sensitive responses such as wails, yelps, and groans of pain and exhaustion.