Within 48 hours the xenomorphs had invaded National City lurking in the tunnels then coming outside we had evacuated the city until Supergirl tried to stop the xenomorphs but she couldn't fight them alone.
She had been followed by an tribe named Crinjita that contained an alien named Predator but Supergirl using the device Cisco gave her seeked out The Flash, The Green Arrow and the Legends Of Tomorrow and their friends to help her and the Crinjia tribe stop the xenomorphs..
At the same time an Queen Alien from an nest that Oliver Queen's son William found attacked National City putting detective Maggie Sawyer into an coma and nearly killing Alex Danvers.
Meanwhile Oliver Queen and Felicity Smoak went after an trail of Xenomorphs stealing the legends Waverider to the cargo ship Weyland-Yutani U.S.S Tarkan while back in National City Supergirl, Flash and the Legends fought more Xenomorphs along with two Predators
The battle was now taken to outer space by the names of Oliver Queen and Felicity Smoak journeyed to the tarakan.

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Heroes Vs Aliens Vs Predator
FanfictionThis story ignores all the events of 2004's Alien Vs Predator and 2007's Requiem and is an direct sequel to 1990's Predator 2 also ignoring 2010's Predators. Story also closely follows the storyline of the 1994 AVP arcade game with some changes set...