Hmmm...translators....
*lights up cigarette like a cheesy noir movie tipster*
*sahdy lounge music plays*
Guy goes by the name of "Tomato", done a lot of Japanese to English ROMs; translated for that anime company Geneon I think. Real pro, currently working on a trans of Mother 3. Brother's got his own site but he can be found at Starmen.net in the forums if you're savy. Man might have a few too much on his hands right now with Mother 3 and all, but he can hook you up with some other translators if he knows 'em.
And I'll be sure to get cracking on this demon list for you and provide you what I know about them mythologically. I'd go with Abbadon though for the big fat guy since that's what SMT has been running with.
PS I appreciate you working on this hack and all. Bets of luck; I'll do what I can to help.
Okay, I'm definately thinking your name choices are pretty spot on in general, so I'm just going to go over the more iffy ones and the demons that are sort of not mythologically well-known.
Moloch, namewise, is fine. He's another name for Ba'al apparently. He was a sacrificial demon/god worshipped in the middl east. He also went by some other famous god names too.
Asmodai or Asmodeus is a well known demon that I'm surprised hasn't made it into the SMT series before considering he's one of the 72 big bad ones. Namewise, stick with Asmodai.
Bael is still a tricky one but it's agreed that he is different than Baal.
Geryon is spelt right and is a giant Hercules faught.
Cronos was a Titan. Name is correct
Arioch, standard Biblical demon, name is fine.
Balaam is prophet yet is considered "wicked"?
Sargatanas appears just to be a random evil demon.
Volva you may want to be,
Völva, who was a wise woman, shaman, or priestess in Germanic paganism, in later Norse paganism, and are a recurring motif in Norse mythology. (Wikipedia : ) )
Rarung should be
Ralung and is a protective diety in association with this Tibetan temple
http://en.wikipedia.org/wiki/RalungNasu, as far as I can tell....means eggplant...so I think you;re right to assume it's Druj Nasu
Kiyohime's tale can be found here
http://en.wikipedia.org/wiki/KiyohimeFuriae should be
Furie, also sometimes called an Erinyes in Greek mythology. Demons of vegence.
Sawo Bhaku is part of a demon dance...
Celuluk is a Balinese demon part of another ceremonial dance.
Amdusias, another Mideival Europe demon.
Girimekhala should be what SMT has it as,
Girimehkala, who is is a large demonic elephant from Sri Lankan mythology.
....More to follow soon.