Cowgirl is propably the strongest enemy type in the Dusk so far. She looks like a regular cowboy of some sort at first glance, with closer look however, you can see the clear cyborg features, like her uppear part of her head, breasts and all her limbs being replaced with a metal features. She also appears to have some sort of after injector injuries on her belly. Due to this she is able to sustain a high damage. She has some sort of rocket launcher instead of her left hand, which is able to shoot around five projectiles, before reloading and every single one of them deals very high ammount of damage if hit directly and moderate ammount of damage when hit by it's splash radius. Due to this, strafing might be proven uneffective, and you should be prepared to find some sort of cover. Riveter is recommended to use against Cowgirl, because of it's high firepower and also a decent range. It is also possible to get Cowgirl to kill herself, due to her shots doing splash damage, so if you trick her to shoot when she is facing a wall, she propably won't survive her own salve of rockets.
She is first encountered in her boss variant "Mama" in the E2M5. After that, she is uncommonly encountered in any following level. She also have a second boss variant in E2M9, where two of Cowgirls Appear, and are called "The Twins".