Originally posted by The Scenario
'k, then, we can start with the X. Manga, so right to left.http://metroid-database.com/manga/official_vol_1_en/ch_0004/scaled/sc_metroid_v01_ch004_0011.png
http://metroid-database.com/manga/official_vol_1_en/ch_0004/scaled/sc_metroid_v01_ch004_0012.png
http://metroid-database.com/manga/official_vol_1_en/ch_0004/scaled/sc_metroid_v01_ch004_0013.png
This being the fastest they've been seen to work, digesting the creatures and then mimicking them over the course of just a few seconds. Then, X can asexually divide into multiple clones over a few hours.
http://www.youtube.com/watch?v=K4wKoILZ9JE#t=23s
Then, once mimicked, killing the X just puts it back into gel form, where it's effectively immune to physical attack, or at least missiles. If it can escape, it doesn't take long for the X to reform its body: http://www.youtube.com/watch?v=v2ErIS8cDIA#t=3m15s
As long as the X get a few Tyranids, they can clone them, and it'd be pretty difficult to kill them physically before it reforms the killed form. They probably would need Metroid DNA to kill them permanently with any kind of ease, though that might be difficult in itself...
On Metroids, they're pretty resilient in themselves. Larval Metroids can tank Super Missiles unfrozen, and plasma will just bounce off things like Omegas and Queens.
Super Missile power: http://www.youtube.com/watch?v=IqZJ0_82Fs0#t=1m10s
Rough Bolter analogue, I would think. Then we have tiny Larvas tanking that like it's nothing: http://www.youtube.com/watch?v=aqszxx7mdd0#t=1m52s
Queen vs. PowerWaveIcePlasma: http://www.youtube.com/watch?v=uWvGdNh3neM#t=2m24s
I imagine the Tyranids could take them out with enough firepower, but smaller Tyranids probably aren't killing them easily.
Hm, thank you, thank you.
Well, lets start with SR388 then for this discussion.
Weird as this is to say, I think the first engagement would actually go fairly poorly for the Tyranids, simply because of the way the X work. Physically damaging them is hard, while destroying their hosts is not so much, the problem is the X themselves.
The thing is, depending on when this takes place, X may not be plentiful on SR388, because in Metroid II, they weren't even noticed IIRC, due to the dominance of Metroids on the world.
If we artificially boost the numbers of the X, or the hive fleet arrives before the Metroids lower the X's numbers to near invisible amounts, as I assume is happening in this thread, many of the lesser creatures will be taken over. Upon realizing the nature of the X, however, the hivemind would change tactics, and the Norn queen would set about trying to engineer an immunity. The easiest way to do that would be to capture Metroids. I think a few Genestealers or Lictors could pull this off easily enough. Once the Tyranids incorporated Metroid DNA into their broods they'd eventually roll over the X for a few reasons.
1. While the X can clone their hosts, the Tyranids lose nothing from their dead, and can reabsorb the biomass of the slain X hosts to create more Tyranids from them. Because the Tyranids will also start with an innitially longer force, this is a war of attrition the X simply cannot win.
2. The Tyranids will now be able to feed on the X directly, and work their genetics into their broods as well, improving them further and possibly allowing gaunts to self propagate or something.
Ofcourse the lynchpin here is the Metroid DNA, it becomes harder in the battle where the Metroids and X are all hugsy wugsy.
I doubt, though, that even if the X take some of the larger creatures they'll be able to win once the Tyranids have that Metroid DNA. I also doubt their ability to take some Tyranids over, such as Hive Tyrants and Zoanthropes, due to their psychic defenses.
Taking a few Carnifexen and warriors would be very good for the X, but their's another question I have about that.
See, the Warriors accompanying Hive Tyrants are directly descended from that Tyrant's own flesh to make the psychic bond between them even more potent. Could the Tyranids potentially still control their infected, temporarily neutralizing the X? Once the infected beasts who had remained under control re-enter the digestion pools, the X go with them, and the next batch will be immune.
Just thoughts.
As for the Metroids, they're an interesting enemy. Very durable and powerful, but I'm not sure they could stand up to some of the Tyranids' heavier weaponry, again I'll cite Zoanthropes. I think a warp blast or a lance from one of those could fell any Metroid, and I can see the Tyranids favouring them in this kind of a battle, as well.
If baby Metroids are captured it's entirely possible the Tyranids could even adopt or counter their energy draining abilities.
So, imho, it comes down to when the first metroid is captured, and whether the Tyranids can pull a second Octarius. The advantage of striking from orbit of the planet gives them a great deal of strategic flexibility, as well.
Eh. Thoughts?