Solar Dungeon

The Solar Dungeon is a Dungeon Biome that has a 20% chance of spawning instead of the normal post-planters Dungeon.

Enemies:

Blaze Armoured Bones

Solar Dungeon Guardian (if Skeleton hasn't been defeated.)

Blaze Preist

Blaze Paladin

Lunar Armoured Bones

+

The usual post-Plantera Dungeon

Bosses:

Skeletron (if not already defeated)