Usurpers are powerful ranged combatants that belong in the Organoid tier.
Spawning
Spawned by Challenge Watchers if their target is at least 2 blocks above them.
Can be spawned by Proto Hiveminds when they have a target.
Can be spawned by Hivetumors when they have a target.
Can be spawned by Outpost Watchers when they have a target.
Unique Behavior
Usurpers will periodically shoot a cluster of 4 projectiles at targets within their line of sight. These projectile rounds have four different types they can be:
Mycelic rounds deal 8 damage (x4 hearts) and inflict Mycelium Infection IV for 20 seconds.
Explosive rounds blow up with a blast strength of 1 and deal 6 damage (x3 hearts). They are also known to knock targets high into the air.
Corrosive rounds deal 8 damage (x4 hearts) and inflict Corrosion II for 30 seconds.
Incendiary rounds deal 12 damage (x6 hearts) and set targets on fire for 6 seconds. If an incendiary round hits a block, some fire will be placed.
Variants
Usurpers have a 66.6% chance to spawn as one of their two Variants (excluding normal Usurpers), with an overall 33.3% chance per Variant.
Burst Fire Usurpers will, instead of shooting 4 rounds at once, rapidly fire between 3 to 6 projectiles one at a time. It has a 5 second reload timer in between shots.
Spray Usurpers have a follow range of 8 blocks. They will shoot a vomit projectile every 5 ticks at their targets. Vomit projectiles deal 2 damage (x1 heart), ignore immunity frames, and inflict Corrosion I for 10 seconds. The amplifier increases by 1 for the target per instance of getting hit by additional vomit projectile (assuming it already has Corrosion); this has no cap.
Behavior
Usurpers are hostile to most non-Spore mobs, with the exceptions being Animals and Fish (unless Should attack Animals is enabled via the Config) and mobs included in the Mobs Not Targeted blacklist within the Config.
When Usurpers either spawn or despawn, they'll display an emerging or burrowing animation. During the emerging state, they are invulnerable to all damage; not, however, the burrowing state.
Usurpers are immune to negative effects that are not above amplifier I.
Affected by Crowd Control.
Usurpers are stationary; immobile.
Usurpers have a passive regeneration equivalent to about amplifier II. This is disabled while they are freezing.
Usurpers can breathe underwater.
If Usurpers detect they're on a block with a hardness of 4 or more, they'll instantly despawn.
Present a weakness to the cold.
Are affected by the Despawning System.
Are affected by Vanilla Despawning.
In regards to Frostbite, have a Body Heat of 2 and Enum Percentage of 7.5%.
Related Advancements
Drops
Armor Fragment (80% chance for 1 - 4)
Corrosive Sack (70% chance for 1 - 3)
Mutated Fibre (100% chance for 6 - 7)
Mutated Heart (30% chance for 1)
Organoid Membrane (80% chance for 1 - 4)
Experience Points (25)
Usurper
Statistics
HP: 60 (x30 hearts)
Armor: 6 (x3 bars)
Mycelic Round Damage: 8 (x4 hearts)
Explosive Round Damage: 6 (x3 hearts)
Corrosive Round Damage: 8 (x4 hearts)
Incendiary Round Damage: 12 (x6 hearts)
Base Follow Range: 64 blocks
Spray Follow Range: 8 blocks
ID: spore:usurper
Threat Level: Variable
Trivia
The Burst Fire Usurper Variant is a suggested Variant, coming from the mind of @blu_gy in the Spore Asylum Discord server.
The Spray Usurper Variant is a suggested Variant, coming from the mind of @solar_fish55 in the Spore Asylum Discord server.
Explosive rounds knocking players into the air is actually a bug, but it was decided not to be fixed because the mod creator thought it was funny.
The name 'Usurper' was originally suggested as the name for a hypothetical "stronger umarmer" that The Matriarch would summon. The mod creator misunderstood the intent of the name and decided it worked for the Usurper. The 'stronger umarmer' was scrapped in the same conversation as it was originally brought up in.
By default, Burst Fire and Spray Usurper Variants are always looking down. The mod creator stated the reason for this is "since the joint is a little more free for them".
Gallery
Getting the Burst Fire and Spray Usurper Variants and Enchanter Delusioner Variant to render in-game.