In addition to the vanilla mobs that spawn throughout the world, there are several extra-dangerous Regional Mobs that spawn randomly in various biomes. These mobs have special abilities and are significantly harder to kill than normal mobs, but have a chance to drop extra experience and/or unique Mob Loot that can be used in crafting recipes and sold to vendors in NPC Towns!
Each region of Atlas, excluding New Nauru, contains its own 2 Elite Mobs, and 1 Champion Mob that are unique to that region and will not spawn elsewhere. Atlas will be adding World Bosses in the near future.
(Elite / Champion - Drops)