Underlord

The Underlord, frequently called "Scuttler" by his allies, is a Nightmare serving Lord Void and Nabonidus. He gets little to no appreciation by the rest of the Nightmares for what he views as immense talent on his part, and utterly despises Nabonidus for challenging Void's command. It has also been revealed that he is the one who revived Wekiga against Nabonidus's orders.

Personality
Delusional and manic, the Underlord is firmly convinced of his place as an indispensible member of the Nightmare armies. He and Nabonidus also share a mutual hatred for each other, with Nabonidus only leaving the Underlord alive until the identity of his accomplice in reviving Wekiga is revealed.

History
The Underlord's first appearance was viewing the battle between Nabonidus and Lord Void. It was immediately made clear that he is disliked by most other Nightmares, and upon Nabonidus's apparent victory over the Nightmare army's lord and master, the Underlord was confronted immediately. The Underlord proceeded to flee madly to his workshop beneath a lone tower, although Nabonidus followed with ease.

After this, Nabonidus made clear the terms of the Underlord's status: Due to the "accord" Nabonidus and Lord Void had reached in their battle, he would be granted amnesty until the Nightmares's most pressing enemies were dealt with. Immediately after, the Underlord would be interrogated to discover his accomplice. Once this knowledge is garnered, the Underlord is to be disposed of. Such consequences entirely went over the Underlord's head as Nabonidus left to other matters.

Much later, Nabonidus appeared to the Underlord once again - This time bringing new materials for his horrid crafts and creations. Nabonidus was able to use his oratory skills to sway the Underlord's devotion, and at this time, the Underlord is crafting a special "commission."

Abilities & Skills
Minion Crafting: The Underlord's main services to the Nightmare armies is his ability to sculpt and animate demonic beings with the use of special materials and parts from corpses. He keeps several minions in his lair of a workshop, ready to assist him at anytime.

Quotes

 * '"NYEEEAAARGHHHLLLRRRSSSsssssslightly alarmed."
 * "Nabonidus never rule. No right no right none not at all. HorrrRRRIIIiiible at delegating, demons don't like digging. Him ugly and weak. Lord Void much taller, much deeper voice..."' 

Trivia

 * Other than Lord Void and Wekiga, the Underlord is the first of Nabonidus's allies to show no fear of him. This is telling, because Lord Void is Nabonidus's superior and Wekiga is apparently his equal in rank. Meanwhile, the Underlord has been repeatedly inferred as a very low-ranked Nightmare.