Cleon
Legend
Well, their leader is a shaman if we ever do anything with him, but I suppose we don't particularly need the domains.
Yes, not listing the domains only lets it have whichever ones it wants!
Languages: It sounds like automatic languages would be Common and one dialect of their own language. Do we know what other kinds of humanoids live in the same region of Mystara? That would give us an idea about bonus languages.
Their original entry mentions goblins and lupins. Other Savage Coast races include rakasta and the recently converted tortle, and after checking the player's guide to the region:
Shazak - nearly identical to the lizardfolk tongue which in 3.5 is draconic.
There are 3 goblinoid languages (rather than racial languages) Yazakan, Yazug, and Yaz.
There are also a bunch of human/national languages but I think that for a fairly generic list we could give them the following:
Goblin, lupin, orc, and possibly draconic, rakasta, and/or giant.
Regards
Mortis
They should probably have Abyssal in there too, considering their background history.