Dracosolon
Prince
Starting with the most prominent characters:
The Gods:
The Archangels:
The civilizations:
The leaders:
The heroes:
Of course, any precision/correction/commentary is welcome. This isn't a serious work, and I'm pretty sure that Kandros, Mahala and Sheelba examples are wrong, tough funny.
In any case, I find amazing the insane work that has been done for all these names.
The Gods:

Spoiler :
Agares-(demonology) duke of Hell
Arawn-(welsh mythology) king of the Otherworld
Amatheon-(welsh mythology) god
Bhall-(Kael)
Camulos-(celtic mythology) god
Ceridwen-(welsh medieval legend) enchantress
(the) Dagda-(irish mythology) god and king of the Tuatha Dé Danann
Danalin-(Kael)
Esus-(gaulish mythology) god
Kilmorph-(Kael)
Lugus-(celtic mythology) god
Mammon-(christianity) personification of wealth and greed
Nantosuelta-(gaulish mythology) goddess of nature, earth, fire and fertility
Nemed-(irish mythology) leader of the Nemedians
Oghma-(celtic mythology)god and one of the Tuatha Dé Danann
Sirona-(gaulish mythology) goddess of healing
Sucellus-(celtic mythology) god of agriculture and forests
Tali-(Kael)
Arawn-(welsh mythology) king of the Otherworld
Amatheon-(welsh mythology) god
Bhall-(Kael)
Camulos-(celtic mythology) god
Ceridwen-(welsh medieval legend) enchantress
(the) Dagda-(irish mythology) god and king of the Tuatha Dé Danann
Danalin-(Kael)
Esus-(gaulish mythology) god
Kilmorph-(Kael)
Lugus-(celtic mythology) god
Mammon-(christianity) personification of wealth and greed
Nantosuelta-(gaulish mythology) goddess of nature, earth, fire and fertility
Nemed-(irish mythology) leader of the Nemedians
Oghma-(celtic mythology)god and one of the Tuatha Dé Danann
Sirona-(gaulish mythology) goddess of healing
Sucellus-(celtic mythology) god of agriculture and forests
Tali-(Kael)
The Archangels:

Spoiler :
Avatar-(hinduism) («descent», sanskrit) descent of a deity
Basium-(«kiss», latin)
Brigit-(irish mythology) daughter of the Dagda
Cassiel-(judeo-christian tradition) angel of solitude and tears
Cernunnos-(celtic cythology) horned god
Condatis-(celtic mythology) («water meets») god of confluence of rivers
Embarr-(irish mythology) («imagination») Niamh's horse
Goibniu-(irish mythology) smith of the Tuatha Dé Danann
Hastur-(Cthulhu mythos) god
Leucetious-(gaulish mythology) god
Maponos-(celtic mythology) god of youth
Sabathiel-(Bible) son of Jeconiah, king of Judah
Taranis-(celtic mythology) god of thunder
Basium-(«kiss», latin)
Brigit-(irish mythology) daughter of the Dagda
Cassiel-(judeo-christian tradition) angel of solitude and tears
Cernunnos-(celtic cythology) horned god
Condatis-(celtic mythology) («water meets») god of confluence of rivers
Embarr-(irish mythology) («imagination») Niamh's horse
Goibniu-(irish mythology) smith of the Tuatha Dé Danann
Hastur-(Cthulhu mythos) god
Leucetious-(gaulish mythology) god
Maponos-(celtic mythology) god of youth
Sabathiel-(Bible) son of Jeconiah, king of Judah
Taranis-(celtic mythology) god of thunder
The civilizations:

Spoiler :
Amurites-mesopotamian people of the 3rd century BC
Balseraphs-(judeo-christian tradition) angels
Bannor-(Thomas Covenant series) bloodguard
Calabim-(judeo-christian tradition) angels
Doviello-(Kael)
Elohim-(«gods», hebrew)
Grigori-(judeo-christian traditian) («watcher», greek) fallen angels
Hippus-(«horse», greek)
Illians-(Kael)
Khazad-(JRR Tolkien) («dwarves», khuzdul)
Kuriotates-(judeo-christian tradition) angels
Lanun-(«pirate», indonesian)
Ljosalfar-(norse mytholgy) («bright elves»)
Luchuirp-(Kael) «lilliputians»
Mercurians-(judeo-christian tradition) angels
Sheaim-(judeo-christian tradition) angels
Svartalfar-(norse mythology) («dark elves»)
Balseraphs-(judeo-christian tradition) angels
Bannor-(Thomas Covenant series) bloodguard
Calabim-(judeo-christian tradition) angels
Doviello-(Kael)
Elohim-(«gods», hebrew)
Grigori-(judeo-christian traditian) («watcher», greek) fallen angels
Hippus-(«horse», greek)
Illians-(Kael)
Khazad-(JRR Tolkien) («dwarves», khuzdul)
Kuriotates-(judeo-christian tradition) angels
Lanun-(«pirate», indonesian)
Ljosalfar-(norse mytholgy) («bright elves»)
Luchuirp-(Kael) «lilliputians»
Mercurians-(judeo-christian tradition) angels
Sheaim-(judeo-christian tradition) angels
Svartalfar-(norse mythology) («dark elves»)
The leaders:

Spoiler :
Alexis-(«helper, defender», greek) french and latin name
Amelanchier-(taxonomy) genus of the Rosaceae family
Auric Ulvin-(Kael's D&D campaign)
Basium-(«kiss», latin)
Bawl-(«crying»)
Beeri-(bible) father of the prophet Judith
Capria-(Kael's D&D campaign) incarnation of death
Cassiel-(judeo-christian tradition) angel of solitude and tears
Caswallawn-(welsh deformation of) Casivellaunus, british chieftain of the 1st century BC
Dain-(«deer», latin)
Decius-roman nomen
Einion-(«anvil», welsh)
Endain-(«windrow», french)
Ethne-(Kael's D&D campaign) mystic
Fir-(taxonomy) genus of the Pinaceae family
Flauros-(demonology) duke of Hell
Hannah-(Bible) wife of Elkanah
Irin-(judeo-christian tradition) angels
Jonas-(judeo-christian tradition) prophet
Kandros-(tibetan bhuddism) («sky dancer», tibetan) female embodiments of enlightened energy
Keelyn-(«slender, pretty», gaelic) girl's name
Logos-(«speech, study», greek)
Lorda-(«lord» -feminine-, italian)
Mahala-(«to settle, to occupy», arab) Balkan word for «quarter»
Morgoth-(JRR Tolkien) («black foe of the world», sindarin)
Perpentach-(Kael)
Phaedra-(greek mythology) («bright») wife of Theseus
Sabathiel-(Bible) son of Jeconiah, king of Judah
Sandalphon-(judeo-christian tradition) («brother», greek) archangel
Sheelba-(Fafhrd and the Gray Mouser) patron warlock of the Gray Mouser
Tasunke-(«horse», Dakota native american's language)
Tebryn Arbandi-(Kael's D&D campaign)
Thorne-(«who live near a thorn bush») english surname
Viconia-(Forgotten Realms) drow cleric of Shar
Amelanchier-(taxonomy) genus of the Rosaceae family
Auric Ulvin-(Kael's D&D campaign)
Basium-(«kiss», latin)
Bawl-(«crying»)
Beeri-(bible) father of the prophet Judith
Capria-(Kael's D&D campaign) incarnation of death
Cassiel-(judeo-christian tradition) angel of solitude and tears
Caswallawn-(welsh deformation of) Casivellaunus, british chieftain of the 1st century BC
Dain-(«deer», latin)
Decius-roman nomen
Einion-(«anvil», welsh)
Endain-(«windrow», french)
Ethne-(Kael's D&D campaign) mystic
Fir-(taxonomy) genus of the Pinaceae family
Flauros-(demonology) duke of Hell
Hannah-(Bible) wife of Elkanah
Irin-(judeo-christian tradition) angels
Jonas-(judeo-christian tradition) prophet
Kandros-(tibetan bhuddism) («sky dancer», tibetan) female embodiments of enlightened energy
Keelyn-(«slender, pretty», gaelic) girl's name
Logos-(«speech, study», greek)
Lorda-(«lord» -feminine-, italian)
Mahala-(«to settle, to occupy», arab) Balkan word for «quarter»
Morgoth-(JRR Tolkien) («black foe of the world», sindarin)
Perpentach-(Kael)
Phaedra-(greek mythology) («bright») wife of Theseus
Sabathiel-(Bible) son of Jeconiah, king of Judah
Sandalphon-(judeo-christian tradition) («brother», greek) archangel
Sheelba-(Fafhrd and the Gray Mouser) patron warlock of the Gray Mouser
Tasunke-(«horse», Dakota native american's language)
Tebryn Arbandi-(Kael's D&D campaign)
Thorne-(«who live near a thorn bush») english surname
Viconia-(Forgotten Realms) drow cleric of Shar
The heroes:

Spoiler :
Acheron-(greek mythology) river of pain in the Underworld
Alazkan-(AlazkanAssassin, FFH contributor)
Ars Moriendi-(«the art of dying», latin) two latin texts from 15th century
Barnaxus-(Bolg, from Kael's D&D campaign) wood golem
Basium-(«kiss», latin)
Buboes-(«groin», greek) swelling of the nymph nodes
Chalid Astrakein-(Chalid,FFH contributor's character)
Corlindale-(FFH contributor)
Dis-(Divine Comedy) city in the lower circles of Hell
Donal-(«ruler of the world») anglicized version of a gaelic name
Drifa-(norse mythology) personification of snow
Goetia-(occultism) («sorcery», greek) invocation of angels or demons
Govannon-(middle welsh deformation of) Gobannus, gaulish god of smiths
Gurid-(Gesta Danorum) Daughter of Alf
Guybrush Threepwood-(Monkey Island) pirate and main character
Hemah-(judeo-christian tradition) angel of wrath
Herne-(english folklore) equestrian ghost
Leviathan-(judeo-christian tradition) («twisted, coiled», hebrew) sea monster
Loki-(FFH contributor, presumably from norse mythology) trickster god
Lucian-(from Lucius, «light», latin)
Lugh-(irish mythology) god and king
Mary Morbus-from Mary Mallon, first known healthy carrier of the typhoid fever's pathogen in the USA
Mithril-(JRR Tolkien) («grey glitter», sindarin) metal
Morbus-(«disease», latin) roman demon, bringer of pestilence
Orthus-(greek mythology) two-headed dog
Phanuel-(Bible) («the face of God») archangel
Rosier-(A Dictionary Of Angels) fallen angel
Stephanos-(«crown, garland», greek)
Wilboman-(FFH contributor)
Yersinia-(taxonomy) genus of the Enterobacteriaceae family - Yersinia pestis is the causative agent of the plague
Alazkan-(AlazkanAssassin, FFH contributor)
Ars Moriendi-(«the art of dying», latin) two latin texts from 15th century
Barnaxus-(Bolg, from Kael's D&D campaign) wood golem
Basium-(«kiss», latin)
Buboes-(«groin», greek) swelling of the nymph nodes
Chalid Astrakein-(Chalid,FFH contributor's character)
Corlindale-(FFH contributor)
Dis-(Divine Comedy) city in the lower circles of Hell
Donal-(«ruler of the world») anglicized version of a gaelic name
Drifa-(norse mythology) personification of snow
Goetia-(occultism) («sorcery», greek) invocation of angels or demons
Govannon-(middle welsh deformation of) Gobannus, gaulish god of smiths
Gurid-(Gesta Danorum) Daughter of Alf
Guybrush Threepwood-(Monkey Island) pirate and main character
Hemah-(judeo-christian tradition) angel of wrath
Herne-(english folklore) equestrian ghost
Leviathan-(judeo-christian tradition) («twisted, coiled», hebrew) sea monster
Loki-(FFH contributor, presumably from norse mythology) trickster god
Lucian-(from Lucius, «light», latin)
Lugh-(irish mythology) god and king
Mary Morbus-from Mary Mallon, first known healthy carrier of the typhoid fever's pathogen in the USA
Mithril-(JRR Tolkien) («grey glitter», sindarin) metal
Morbus-(«disease», latin) roman demon, bringer of pestilence
Orthus-(greek mythology) two-headed dog
Phanuel-(Bible) («the face of God») archangel
Rosier-(A Dictionary Of Angels) fallen angel
Stephanos-(«crown, garland», greek)
Wilboman-(FFH contributor)
Yersinia-(taxonomy) genus of the Enterobacteriaceae family - Yersinia pestis is the causative agent of the plague
Of course, any precision/correction/commentary is welcome. This isn't a serious work, and I'm pretty sure that Kandros, Mahala and Sheelba examples are wrong, tough funny.

In any case, I find amazing the insane work that has been done for all these names.
