MacIntyre is a sniper for Charon Industries and a former boxer. She was imprisoned shortly after her time in the UNSC and had participated in underground fighting rings for a chance at a lesser sentence. Impressed with her abilities to think on her feet, Charon Industries hired her onto their security team.

As a sniper, she often has to rely on her team, and has to remember they rely on her too. MacIntyre had found her time in Charon Industries to be therapeutic, allowing her to socialize again without worrying for a knife in her back, and with a network to assist her in the field. She tends to be very insightful and often loyal to the friends she makes.