Nightmare Scion
Nightmare Scion can be found in the following locations: Cemetery Quarter, Alchemist Quarter and in the Arena and Zoo Quarter (unreachable), Vengoth Castle, Formorgar Mines, Lower Spike, Robson Isle (single respawn), Krailos Ruins.
Nightmare Scion has 1400 hitpoints. It is immune to earth and death damage. It is strong against energy, fire, and ice damage. It is weak against holy damage. It can neither be summoned nor convinced.
Nightmare Scion yields 1350 base experience points. Its loot can include gold coin, platinum coin, crown helmet, meat, death ring, bar of chocolate, diamond sceptre, shadow sceptre, focus cape, crystal of focus, essence of a bad dream, and scythe leg.