Ithsmar is like a Mirelurk - only more crunchy and radioactive.
About this creation
Serving under Balin, the Prince of Light, Ithsmar has been granted power over Gamma radiation. He can never find a good use for his powers, except for cooking his dinner, so he spends most his time in his quarters in the Palace of Lights by himself. It's not that he's unpopular, but most minions that hang around him for too long complain about getting headaches and tend to keep out of his way. If he has to, Ithsmar could easily kill someone with a ridiculously powerful gamma blast, but so far he's never been needed, or maybe, because of his reclusive nature, people have just forgotten him.
Ithsmar wears a huge gas mask, because he sometimes has to travel through toxic, irradiated areas, and, despite being radiation-proof, he can't breathe in a toxic environment.
MOC: like my other elemental minions, Ithsmar uses alternative methods in how he's built. The Mirelurks from Fallout 3 provided a lot of inspiration for him, as you can tell.