RED
Draco - Latin for Dragon
Frigg - Norse mythology, wife of Odin
Hext - "Hexed," i.s. had a hex or curse placed upon them.
Zin - African mythology, Zin Kibaru is a blind spirit who commands fish.  Zin is also a common surname worldwide.
Leviathan - Book of Job, Leviathan is one of two fantastical creatures, this one very fierce and related to water.
Aetrix - Original name, possibly based on Archeopteryx
Kastor - Greek Mythology, Kastor and Pollux were the twin brothers known as the Dioskouroi.
Hantu - Malay folklore, Hantu means "Ghost."
Fenrir - Norse mythology, the father of all wolves who will kill Odin in the battle of Ragnarok, but in turn be killed by Vidar.
Kinnara - Half-horse half-human (sometimes half-bird) Buddhist deity, embodiment of love and celestial music.

PURPLE
Trollis - Troll
Merk - ???? (Original name?)
Laekrian - ???? (Original name?)
Huli - Chinese nine-tailed fox spirit, similar to the Japanese Kitsune
Daemun - from Daemon/Demon
Dactyl - From Pterodactyl
Alikorn - An Alicorn is a winged Unicorn
Borg - From Cyborg
Gog - From Revelation, "Gog" and "Magog" were names of nations opposing the believing remnant at the Battle of Armageddon.
Dominus - Latin for Dominate
Klax - An old, popular arcade game that was ported to nearly every system imaginable, sometimes twice.
Garuda - Hindu and Buddhist, a large holy bird creature.
Vladimir - Common Slavic name, the first name of Vlad Tepes, the historical basis for Dracula
Arborius - Arbor, i.e. forested

BLUE
Dioskuri - Greek Mythology, Kastor and Pollux were the twin brothers known as the Dioskouroi.
Kromon - The Creed of the Kromon is a Doctor Who audio story.  Might not be the source of the name.
Dodo - An extinct bird (the dragon looks like a featherless Dodo bird)
Jura - Old Scottish island, sounds like a Japanese word.
Yanari - Japanese mythology, Yanari are miniature Oni which appear in houses at night and make squeaking noises to disturb the household.
Sahran - Arabic for "Awake."
Kobahl - From Kobold, a type of Germanic goblin.
Baldr - Norse deity, was invulnerable to all damage except Holly.  Loki tricked a blind god into shooting him with a holly arrow, because Loki was a jerk.
Vazir - Spelling variant of Vizier.
Grypp - ???? (Original name?)
Numen - Latin for "Divinity," "Divine presence," or "Divine will."
Bolt - A bolt of lightning (or the shape of his death gaze attack)
Viscus - From Viscous
Drude - A type of Germanic witch who causes nightmares, name based on the druids.
Kelsis - ???? (Original name?)
Etzel - Norse Mythology, alternate name for Atli, second husband of Kriemhild in the Nibelungenlied.  Also alternate name of Atilla the Hun or General Flavius Aetius.

ORANGE
Volos - Slavic mythology, alternate spelling of Veles, god of the underworld, earthl waters, forests, fertility, cattle, pastures, snakes, wolves, medicine, music, and magic.
Slynx - The Slynx is a classic dystopian Russian novel.
Dodopyrr - Dodo Vampire
Habrok - Danish mythology, the hawk owned by King Hrolf Kraki.  Greatest hawk in the world.
Ankor - Cambodian, "Angkor" is part of the name of multiple cities, such as Angkor Thom and Angkor Wat.
Lucius - Common male name that sounds sinister because of its similarity to Lucifer.
Bronze - The metal
Kolo - Hai'na-Kolo is a Polynesian goddess of bird-catchers and fishnets.
Ruma - Hindu, can apply to many different characters.
Noss - Norse mythology, Gersemi and Noss were beautiful daughters of Frigg.
Hydron - From Hydro, meaning "water."  Also the name of a character in The New Adventures of He-Man.
Luminark - "Light Ark," Luminark also appears in Warhammer 40K.
Enki - Sumerian god of creation.
Septys - From Septic
Darja - Semi-common name, also means "Arabic."
Amarok - Inuit mythology, a massive wolf deity who devours anybody who hunts alone.
Durga - Hindu mythology, a form of the mother goddess, also related to Kali.

GREEN
Garzev - ???? (Original name?)
Nassus - A variant name of Anubis, Egyptian god of death.
Gaspar - One of the Three Magi
Serabis - Serapis is a Greek-Egyptian god.
Naga - Hindu, a snake-human creature.
Elixis - From Elixir.
Ith - Celtic mythology, attempted t conquer Ireland but was defeated by the three kings, Mac Cecht, Mc Cuill, and Mac Greine.
Pandi - In medieval folklore, the Pandi were a race of people with gignatic ears, eight fingers and toes on each hand and foot, and white hair that turned black with age.
Karna - Hindu, hero of the Mahabharata.
Urd - Norse mythology, one of the three Norns, or fates (Urd, Skuld, Verdandi)
Ettin - Archaic term for "Giant," often used for two-headed giants.
Nix - Nyx is the Greek deity of the night, who predated even the titans.  Nix could also be a shortened name of a Nixie, a type of fairy.
Danzig - Glenn Danzig is a lead musician from The Misfits.  Danzig is also a Polish city.
Hugin - Norse mythology, raven who brings information to Odin.  Name means "Thought."
Munin - Norse mythology, raven who brings information to Odin.  Name means "Memory."


GOLD
Bander - Bandersnatch, a ferocious creature from Alice Through the Looking-Glass.
Caladbolg - Celtich mythology, magic sword that looks like a rainbow, can cut mountains in two, and destroys armies.  Was wielded by Fergus mac Roich.
Firactus - Combination of Fire and Pterodactyl.
Ferrox - Ferrous, i.e. metal consisting of iron.
Lumen - Latin for Light
Basileus - Means "King" in ancient Greek
Yersinu - Yersinia is a genus of bacteria (?!?)
Whalegnawer - Literal name.  He gnaws on whales.
Consurgens - The Aurora Consurgens is a book on alchemy from the 15th century, famous for its rich artwork.  Author unknown.
Khrysos - Greek Mythology, Khrysis is the son of Zeus and the spirit of gold.
Sekoronos - From "Sekhem," a sacred staff held by Pharaoh.  Same root word as "Sekhmet."
Cthoteuthis - Similar to Cthulhu an aquatic elder god from the writings of H.P. Lovecraft.


PLATINUM
Mune - ???? (Original name?)
Cerbero - Greek, Cerberus, the three-headed dog who guards the gates of Hades.
Nosfer - Nosferatu, i.e. Vampire
Kulan - Variant of Chu Chulainn, hero in Celtic mythology
Cryzan - ???? (Original name?)
Necura - Necro, Latin for "Death."
Jagra - Jagran is the name of a Hindu ritual
Quetz - Aztec, shortened version of the god Quetzalcoatl (the dragon resembles some statues of Quetzalcoatl)
Vulcan - Roman god of the forge.
Kelvin - Along with Farhenheit and Celcius, the Kelvin scale measures temperature.  0 degrees Kelvin is absolute 0.
Kaiju - Japanese for "Monster," in this case referring to giant monsters, like Godzilla.
Rizar - Razor

SAPPHIRE
Scorchil - Scorch
Iteru - Iteru is Egyptian for "Nile."
Sekhem - a sacred staff held by Pharaoh.  Same root word as "Sekhmet."
Anapa- Greek translation of the name Anubis, Egyptian god of death.
Chompa - Chomp
Gorgonus - Gorgon, a greek monster resembling a woman with snakes for hair (Medusa, Stheno, Euryale)
Mehaten - From "Aten," Egyptian sun god who was at one point worshipped exclusively by the Pharaoh.
Hauheset - From "Hauhet," the female counterpart of Heh, who is the Egyptian personification of infinity or eternity.
Apophet - Apophis is a variant of Apep, the serpent demon who embodies chaos and destruction in Egyptian mythology.

GARNET
Avalanche - Avalanche
Frostbiter - Frostbite
Jul - Scandinavian and Germanic word for Yule
Renard - A trickster foc from many European legends across many cultures.
Ursa - Ursa means "Bear."
Zaru - Mizaru, Kikazaru, and Iwazaru are the "See no evil, hear no evil, speak no evil" monkeys.
Aquileas and Austeros - Aquilo and Auster are the Latin names of Boreas and Notos, embodiments of the North and South Wind.

DIVINE
Lyth - Variant name of Lethe, a river in Hades on the banks of Styx.
Necroth - From Necro, meaning "death"
Ladon - Grek mythology, a serpentine dragon that guarded the golden apple tree of the Hesperides.
Zalon - Zalon Thompson is a British pop singer.
Jaculus - Medieval serpent dragon, resembling a javelin with wings.
Thraex - A Roman gladiator armed with a small sword and small shield.
Kinnarakku - See Kinnara
Magmorr - Magma
Yazi - Chinese heraldric symbol, a hybrid of a wolf and a dragon.  Commonly associated with battle.
Grumble - What most people do on internet forums
Sigurd - Legendary Norse hero, major character in the Volsunga saga.  Sometimes conflated with Siegfried, hero of the Nibelungenlied.
Ormarr - Common Norse name, means "Serpent Army."
Sobek - Egyptian crocodile-headed god of the Nile
Samnite - Type of Roman gladiator fashioned after the warriors of Samnius.
Bixi - Chinese dragon with the shell of a turtle.
Donivalis - ???? (Original name?)
Droyeuse - From Joyeuse, the legendary sword of Charlemagne
Meridian - Line of longitude which divides the earth.
Dimachaerus - Type of Roman Gladiator armed with two swords.
Fennrok - See Fenrir
Infernicus - Inferno
Lochsvur - Original name, possibly from Loch Ness Monster
Phweemp - Made up for the game
Skarr - Scar
Nightshade - A type of plant known for its extremely deadly poison.
Ebon - Ebon means "black."
Phasmos - Greek for "Ghosts."
Tarand - European legendary creature based on early reindeer sightings.
Tengu - Japanese legendary Yokai crow or dog spirit from the mountains, often takes the form of a man with a long, red nose.