what sci fi creature/villain would you want the xenomorph to fight the most?

What about the Thing V.S. Xenomorph ;)

Some Screamers, there could be a Xenomorph screamer, with it's head opening revealing a hacksaw or something.

Straight up slasher fight:  Jason Voorhees, Freddy & Michael Myers!!

SciFi:  Kylo Ren!!

'Movie fan' got there first - the shape-shifting, f**ked up mess that is The Thing (John Carpenter) - now that would be one weird, gloopy smack down! I have a feeling The Thing would win, because it can take any form it's used before, and it's not dead until every cell in its body is burned, so the Xeno would be worn down eventually, and never be able to eradicate it....

The only thing that might save the Xeno is if it were biomechanical. The Thing could only overtake biological material- the meat. 

Rick Sanchez vs a hive of Xenomorphs.

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