Geb
Abacus
Lorka
Kibo (with the 'I' pronounced as 'ee')
Ig
Those are the names I choose
Why-
They all sounds fittingly inhuman (except abacus) for a slave hobgoblin mage to have, and I can also imagine a figure of considerable power using some of these.
I picked Abacus because the objects are usually associated with very old-fashioned maths, hence knowledge and the link to magic. Their simplicity linking to the hobgoblin race, and the age nodding at the medi-evil theme of the game.
Hmmm, trying to think of some goblin like names, here's a few
Muddgrubber
Rockpusher
stick
Grubbyhands
These are using Latin
Sepul*us (buried)
Mortuus isset (dead and gone)
Copertus (buried deep)