| lane_type = Ground
| enemy_types = Ranged.
| variants = [[Orc Elemental Commanders]]
| origin_stage = The Demon's Lair Incursion.
| description = Attacks produce a line of AoE lava fissures that launch any heroes in its way upwards. Drops a lava boulder pickup on death.
* <span style="font-size:90%"> '''Stationary boss fight''' - ''The boss remains in one or several specific spots during its attack phase, players will need to go to the boss to defeat them.''</span>
* <span style="font-size:90%"> '''Free-roaming boss fight''' - ''The boss is mobile. Players will be able to aggro them to various areas in the map. If all players are dead or out of range, boss may proceed towards (and attack) the Eternia Crystal.''</span>
* <span style="font-size:90%"> '''Hybrid boss fight''' - ''A mix of both types of boss fight. Bosses will only get to roam in a specific stationed area instead of the entire map.''</span>
{|
| lane_type = Boss
| encounter = Harbinger's Warship Adventures or Prime VII Incursion.
| description = Semi-stationary/free-roaming Hybrid boss fight that adds an additional attack pattern with each passing phase which includes various vicious melee and range attacks. Also utilizes functions of his warship such as firing his cannons at the Core or opening a hatch that vacuums nearby heroes into the brig.
}}
|-
| lane_type = Boss
| encounter = The Demon's Lair Chaos IV or Prime II Incursion.
| description = Stationary boss fight. Can only be damaged when stunned by catapult-launched lava ballsmeteors dropped by Lava Guardians. Attack patterns involves frequently throwing three giant lava boulders meteors at heroes, defenses or core - and setting everyone ablaze with roars, dealing minimal damage over time.
}}
||
| lane_type = Boss
| encounter = Embermount Volcano Expeditions 6th wave.
| description = Free-roaming boss fight. Battles Rocks the cavern with an insane flurry its presence causing chunks of melee stones to drop everywhere while performing various attacks such as spitting lava meteors/fireballs along with flame-breaths and ranged based attacksswoop strikes. Creates flame trails, spits Will occasionally plunge into the lava boulders, breathes fire, drops chunks of rock, executes core-damaging chasm dives & full-bodied physical chargesto trigger a reaction that damages all Cores in the map. Incredibly resistant to damage.
}}
|-
| lane_type = Boss
| encounter = Tornado Highlands Expeditions 6th wave.
| description = Stationary boss fight. Fires precision eyebeams and homing bolts of various elements that inflict crowd control effects. Whenever a health breakpoint has been reached, a damage immunity shield is placed on the boss which can be removed by defeating the Wind Lords acting as conduits. Unable to damage core.
}}
||
| lane_type = Boss
| encounter = Crystal Mine Expeditions 6th wave.
| description = Free-roaming boss fight. Large witherbeast with that utilizes crystallized shards for its unique melee and ranged attack abilities . Also has a burrowing ability that focuses on dealing high knockback and stuns. Other periodic abilities include can either dish out an instant-death burrow attack and summoning or summon [[Lava Bugs]] as minions. Incredibly resistant to damageand deals high knockback.
}}
|-
| lane_type = Boss
| encounter = Malakai's Manor Expeditions 6th wave.
| description = Free-roaming boss fight. Uses a mace and shield to perform various smashing and bashing attacks that specialize in moving defenses. Projectile attack has homing properties and passes through terrain. Incredibly resistant to frontal damageand deals high knockback.
}}
||
{{Enemy Summary
| icon = File:King Aquarion Icon.png
| name = King Aquarion
| lane_type = Boss
| encounter = Aquarion Throne Room 6th wave.
| description = Hybrid boss fight confined to a chamber arena where the King summons Whirlpools, Oceanic Rifts, Freezing Ice Shards and Streaming Water Blasts. When in half health, Kraken Tentacles will also be summoned for aid. Moderately resistant to damage and deals high knockback.
}}
|-
|
{{Enemy Summary
| icon = File:Eye_of_Cthulhu_Terraria_Icon.png