Green Lantern Versus Aliens

The Xenomorphs, who are most notably simply known as the Aliens have crossed over with a number of different characters from fiction – most notably the Predators, of course – and they include DC’s Green Lantern Corps.
It was in a year 2000 collaboration between DC and Dark Horse, in which the Corps stumble across the Xenomorphs in space. Not believing they were evil, but simply seeing them as space sharks – perfect killing machines who kill to survive – they opted to send them to the uninhabited sentient planet Mogo, rather than destroying them, but it turned out to be an error of judgement.
A fight between the two titular groups ensued, but it seems weird because the gulf in power is so vast – the Aliens really shouldn’t be any kind of threat to the Green Lanterns – but that’s crossovers for you!
