Marvel: Xenomorphs

Duncan transmigrated into the Marvel Universe, only to discover an Xenomorph by his side.

"Let's start with a small goal-I'm going to create a universe filled with Xenomorphs!"

In the Marvel Multiverse:

Iron Man descends from the sky in his Anti-Xenomorph Armor: "Sorry, Duncan, but I have to stop you."

A grief-stricken Wolverine from Days of Future Past exclaims: "Mutants shouldn't become part of your species."

Kang the Conqueror stares silently at the swarm of Xenomorph versions of himself infiltrating his dynasty.

In the DC Multiverse:

Superman, besieged by multiple Xenomorph-Supermen hybrids, shouts: "Bring out the Kryptonite cannon!"

Batman, struggling to defeat a single Xenomorph, asks the ultimate existential question: "Do you bleed? Oh, you bleed acid."

The Green Lantern, relentlessly pursued across dozens of galaxies by Xenomorph wearing rings of every color, mutters in frustration:"How can these freaks even become Lanterns?!"

As Duncan leads his army of Xenomorphs across the multiverse, capturing gods to serve as hosts for Xenomorph embryos, he pauses to look around.

"Uh... this might've gone too far."

(The focus is on Marvel in the start for many chapters)