"Parasite co-opts parasite. Symbiote seemingly trumps Xenomorph," the new Symbiote says, granting the Avengers a fighting chance against the monsters that have conquered the galaxy. This isn't the ...

Finally, we get to the xenomorph. we see fingers trailing slime from an face-hugger egg followed by a glimpse of Timothy Olyphant as the synthetic, Kirsh, then we see the soldiers entering a cave.

Oh, and as to how Sinister himself is immune to the xenomorph threat and his many clones, Aliens Vs Avengers #3 by Jonathan Hickman and Esad Ribic Every Mister Sinister is pregnant with a xenomorph.