Predator(Nickname - Species) - Homeworld // Prey
Very Long Note: NOT EVERY SPECIES HAS TO HAVE NATURAL PREDATORS. I even saw one for Upchuck, who is stated to be top of the food chain. I SAW A DEVIANTART FOR ALIEN X HAVING ONE, FOR FUCK'S SAKE! (If Celestialsapiens did have natural predators, the ones with more agreeable personalities would have retroactively wiped the predators out.) Seriously, they had to make the one for To'kustars a freaking virus to make any lick of sense for why they had one. Mechamorphs are artificial beings and Sonorosians are living sound. Some others I don't think would have natural predators: Atomix, Prypiatosian-B, Terraspin (peaceful society that relaxes in meadows, 'nough said), Naljians, Nosedeenian, Conductoid, Chimera Sui Generis, all the Anurian species, Lenopan, Vreedle, Polymorph(original homeworld destroyed), Osmosian and Vulpimancer.
If Protosts have a natural predator, it may work against Polymorphs.
Crabdozer - [Planierraupe] - Pyros // Pyronite
Buglizard/Smoguana - [Lagartolone] - Lepidopterra // Lepidopterran
Terroranchula - Deimophosidae - Atrocius 0 // Anthonocrepitus grandictum
//Atrocius 0 is now uninhabitable. I guess Khyber could have gotten it beforehand or someone could have transported them for species preservation. *cough Pax cough*//
Hypnotick - Psycholeopterran - Kylmyys // Necrofriggian
Mucilator - [Viscidolage] - Gryllusia // Orthopterran
//Code calls it Bulksack and Blobbeast as an insult//
Slamworm - Slammoid - Terraexcava // Talpaedan
Tyrannopede - Kaosseffexx Ultimasauria - Terradino // Vaxasaurian, Pturbosaurian
Vicetopus/Colossal Cephlataur - Encephalonus IV // Cerebrocrustacean
Thalaraptor - Omnivoracious - Galvan Prime // Galvan (Thalamus + Raptor)
Duplicat/Splittertooth - Panuncian - Hathor // Splixson
Parasitoa - [To'kuphage] - Cosmic Storm // To'kustar
Screegit - ??? // ???
//DJ Wyatt stated that the Nemetrix would accept Screegit DNA, but did not mention if they were predators of a revealed species//
Capricronus/Watch Hound- Time Beast/*[Cronobestium] - ??? // ???
//DJW said the Nemetrix would accept Time Beast DNA at the right moment, but did not mention if they were predators of a revealed species. Maybe they just need to be savage enough?//
Tremorsaur/*Mosasuna - Sand Ripper - Khoros // Tetramand
Megalodoom/Gigateeth - A. Carcharodon - Arburia // A. Pelarota
Humpbackus - Molluskus // Cephalod-ae
Kingcean/Queencean - Great White Shark - Earth // Tursiops truncatus
Parthen/Athena - Bubo virginianus - Earth // Mus musculas
Overboard - Kraken - Earth?
Cheeteleon - Acinonyonidae - Aranhaschimmia // Arachnichimp
https://www.deviantart.com/rzgmon200/art/Omniverse-Predators-set-Pencil-Sketches-603716298
//It's stated that Arachnichimps have many predators, not just Root Sharks//
Buggeyman - Elmstritian - Nemunimos IV // Nemuina
https://www.deviantart.com/rzgmon200/art/Into-the-Omniverse-Buggeyman-841320764
Quartzilla - [Antrozaur] - Petropia // Petrosapien, Crystalsapien
Mangling Heck Worm - Dravek
AN: It has apparently been stated that ANY non-sapient animal can be accepted into the Nemetrix, not just vicious predators.
Fourhorn - Ziboson - Khoros
[Chromanther] - [Crystapantera] - Petropia
https://www.deviantart.com/rzgmon200/art/Omniverse-Galactic-Riders-604505879
[Phoenorch] - [Pyrovian] - Pyros
https://www.deviantart.com/martoonsarts/art/Ben-10-Beast-Riders-Heat-Wing-784034314
Nullion - Null Guardian - Null Void
Night Mare - [Transparequus] - Anur Transyl
Pumpklan - Jakobara (pumpkin aliens)
Pallorfang
Vulpin Serpent - Vulpinic Colossophidian/Colossal Vulpentes
Krakken - Balarian
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Ultimate
Crabdozer: https://www.deviantart.com/1999olympian/art/Pyrosaur-Nemetrix-Alien-Predator-749119017
Duplicat - Smilodoom/Battlecat
Mucilator - Mucihilation
https://www.deviantart.com/master-of-dreams/art/Disgusting-but-Deadly-420467902
Terroranchula - Phobianchula
https://www.deviantart.com/caiohsf/art/Ultimate-Terroranchula-Commission-897545164