Ancients Awakened/Ancients

The Ancients Awakened Mod includes a number of called Ancients. They are meant to be rather difficult bosses, and are fought anywhere from after the Mechanical Bosses to right before the Superancients. Eventually, there is planned to be an Ancient boss for every major biome in the game, including the ones added in the Ancients Awakened Mod as well as the biomes in Vanilla.

As of the 1.0 update, there are 6 bosses that are considered Ancients in the mod. All Ancients are fought during Hardmode and Post-Moon Lord.

Awakened Phases
Currently, all of the Ancients ingame have an additional Awakened phase. The Ancients fought in Hardmode-tier have their awakened forms in a fashion of rematches; featuring more powerful attacks, a higher difficulty and stronger gear to compensate.

The Ancients fought after defeating the Equinox Worms have their awakened forms fought right after defeating the boss itself, however exclusive to Expert Mode. These Ancients drop unique summoning items when defeated in Expert, which allows the player to skip the normal phase and fight the awakened phase right off the bat.

Trivia

 * Ancients were used to be separated into 5 different tiers depending on the progression in past updates including Superancients and Hyperancients. But this separation concept was scrapped, and Ancients have been separated into 3 variants.
 * Tier 1 Ancients were Hardmode-tier ones, Tier 2 Ancients were Post-ML ones and Tier 3 Ancients were post-Sisters of Discord ones, which they were also considered as Ancients back then.
 * Ancients however, are now divided into two different progressions: (Excluding Supers and Hypers) Some of them can be fought on Hardmode and their awakened forms can be challenged in Post Moon Lord. Some of them can be fought after defeating, and their both normal fights and awakened fights will be fought at the same time.