Two enemy pilota wreck. One is alien male, other human male. Alien male gets pregnant. Think they are called dreck drek or druk?

An alien abductee must fight against his programming to decide the fate of Earth.

A pilot crash lands on an alien planet where she faces an unexpected enemy... another version of herself-one who has been on the planet long enough to know that only one of them is going to make it out alive.

A good alien from a dying race must impregnate an Earth woman to avoid extinction of his race. A bad alien whose race helped wipe out good alien's race doesn't want to see this happen.