Slybertron

Slybertron is a Hardmode Boss and is part of Steam Trio bosses. It can be considered the steampunk version of King Slime.

Spawn
Slybertron, like most other bosses, does not spawn on its own and requires the player to summon it with the Steam Crown.

Behavior
Slybertron behaves similarly to King Slime. It bounces around following the player while shooting steam projectiles at the player. As the fight progresses, Slybertron will release enemies that follow the player around for a certain amount of time.

Phase 1

 * All projectiles inflict the Steamy debuff.
 * The Slybertron fires three steams in 3 times each.
 * It fires multiple Electroshock, in which it duplicates itself and disappear over time.
 * It shoots one Coginator that spins by itself and will attack you.
 * It shoots Gearikans from tossing them to the ground similar to Spiky Balls.
 * Upon reaching 75% health, the Slybertron will do 2nd phase that has new attacks.

Phase 2

 * It shoots two steams that can detect players that can deal contact damage to them.
 * It also shoots steams that can also shoot steams on the air that can fire down Gas Balls.
 * It shoots out another Electroshock, in which it multiplies itself and disappear afterward.
 * The Slybertron can shoot more Coginators up to 4 projectiles.
 * Upon reaching 25% health, it will enter the 3rd phase, in which makes the boss increasing its health by 45% and goes stronger.

Phase 3
Expert Mode:
 * All projectiles that spawn more often.
 * Steamy debuff now increases by 3 seconds from projectiles.