Nidhoggr

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Machine King: Nidhoggr
Nidhoggr's giant Dragon Ship
Full Name	Machine King Nidhoggr
Element	Earth (Dragon Ship), Frost (True form).
Weapons	Cannons, bombs, floor-spikes, Poison gas.
Location	Pirate Island
Clan	Demon Clan
First appearance	Boktai 3: Sabata's Counterattack

Rightfully named the Machine King, Nidhoggr is a boy-genious mechanic Immortal in Boktai 3: Sabata's Counterattack who works alongside Ratatosk as part of the Demon Clan. He is charged with protecting the Magic Canon that Django plans to use to reach Dark Castle. He manages to capture Trinity and hold him hostage within his Dragon Ship. While the ships itself is of the Earth element, he himself is of the Frost element.

Like Hresvelgr, he is referenced in Lunar Knights as an armor series.