NCF – Extended list of Neutral creatures.

Dark Paladins

Level 6
Weekly growth 5
Attack 28
Defense 26
Damage 40-60
Hit Points 180
Speed 6
Initiative 7
Mana 30
Abilities: Armored, Cleave, Magic Resistance Aura, Battle Fury, Smith, Champion Charge, Hew, Demonic, Channel Energy, Frenzied, Blast, Mind Control Immunity, Mana Destroyer.
Spells
Grief
Vampirism
Earthquake (Basic)
Fireball (Expert)
Fire Storm (Expert)
Darkness Word (Basic)
Create Phantom
Raise Dead
Magic Arrow (Expert)
Description:
Dark Paladins are knights who served the Griffin Empire with honor. But as the years passed, some wanted to know what the true essence of the evil they were fighting was. Then they summoned dark forces, and evil ensnared them in a web of dependence. They liked it, and they wanted more. They literally became dependent on dark magic, and Kha-Beleth swore to give them as much as they needed.

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You could take the skin of Nicholas (the Undead), paint his armor black and fiery red, you could make them bigger, give them a cloak (but this might affect the appearance, but it's still worth seeing how it will look), and add a burning head of Kha-Beleth (slightly reduced to fit the skin, but if it doesn't work, you can put the face of a Templar (only with pale skin, black hair, and red eyes).

Added 3 minutes ago

Dark Paladins
...
You could take the skin of Nicholas (the Undead), paint his armor black and fiery red, you could make them bigger, give them a cloak (but this might affect the appearance, but it's still worth seeing how it will look), and add a burning head of Kha-Beleth (slightly reduced to fit the skin, but if it doesn't work, you can put the face of a Templar (only with pale skin, black hair, and red eyes).

Or you could do the same with a skin like the Templars.

Added 11 minutes ago
Waiting for a response from Psatkha.