system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman/Aliens] What would happen if WayneCorp successfully brought back an Alien?

Inspired because I misread the title of the other post - in an Alternate Universe where WayneCorp discovers the Aliens, decides it's a good idea to bring one back to earth, and successfully gets one into a high-security research facility.

Despite this being the future, Batman is still alive and active (*Because he's batman*) - how do things turn out?
gpt
An aging Bruce Wayne is on the verge of forced retirement when WayneCorp gets access to something from another world.  Once it hatches, the WayneCorp facilities are overrun and Batman must suit up one more time.

Batman eliminates all threats, but as he kills the last Alien, a lone facehugger latches on to him.

Bruce Wayne is alone for days as something develops inside him, copying his genetic code, and somehow something more.  His mind.  Bruce Wayne's will is imprinted on the new creatire and BATALIEN is born.