Cosmic Guardian

The Cosmic Guardian is a post-Moon Lord boss servant enemy that is spawned during the fight with The Devourer of Gods. In Revengeance Mode, it spawns when the Devourer of Gods reaches 60% health, and an additional two appear at 20% health. Another three will spawn in the Devourer of Gods' final phase at 30% health in all difficulties. It will fly up high and despawn once the Devourer of Gods is defeated in its first phase. It can also be spawned by the Chibii Devourer pet.

Unlike the Devourer of Gods, the Cosmic Guardian is always airborne and will pursue the player regardless of their distance from the ground. It behaves almost identically to a Wyvern, albeit with significantly increased speed, health, and damage.

Resistances

 * All segments take reduced damage from non-minion piercing projectiles in Expert Mode. Projectile damage is divided by the number of times it pierces. Infinite piercing deals 50% damage.
 * All segments reduce damage from grenade-type projectiles by 80%. A list of affected projectiles is below.

Trivia

 * The Cosmic Guardian used to be called "Another worm boss" as a reference to the prevalence of worm bosses in the mod. After that, it was known as "Devourer of Thots", in reference to the memetic slang term "thot" to refer to a promiscuous woman.
 * Before the Cosmic Guardian was introduced, a second Devourer of Gods would spawn in its place.
 * The player would have to defeat the newly spawned Devourer of Gods first because if the new Devourer reached 25% life after the old Devourer had been defeated, a third Devourer of Gods would spawn, and the process would begin anew.
 * Only two Devourers of Gods could exist at once, so by defeating the newly spawned Devourer of Gods first, the original Devourer of Gods (which would already be below 25% life) could be defeated without worry of another spawning.