Voidgloom Seraph

"If Necron is the right-hand of the Wither King, this dark demigod is the left-hand."

The Voidgloom Seraph (/ˈsɛrəf/, "the burning one"; plural Seraphim /ˈsɛrəfɪm/) is a Slayer Boss in the Enderman Slayer track. It is an Enderman with strong attacks. It is significantly stronger than all other Slayer bosses.

Spawning
The Voidgloom Seraph spawns as the end boss of a Enderman Slayer Quest after the required amount of Combat XP is earned by killing Enderman-type mobs. When the last required mob is killed, purple particles will appear around the location of its death, and the Voidgloom Seraph will spawn in its place after a short time.

Each tier of the Seraph requires the previous tier to have been defeated at least once. The Seraph requires a  Sven Packmaster kill to start.

Behavior
The Voidgloom Seraph is an Enderman-type mob hostile to all players. It has the appearance of an enderman with critical particles following it. It has a smaller aggro range compared to other Slayers.

Half the damage of all Voidgloom Seraphim is dealt as AoE damage, damaging all players fighting the Seraph in range.

Occasionally, it will teleport behind or to the side of the player it is attacking. This teleport ability has unlimited range. This has a higher chance to occur if the player has not attacked the Seraph for a short time.

All Voidgloom Seraphim are immune to the abilities of Aspect of the Dragons and Ice Spray Wand. They are immune to water damage. Like normal Endermen, they are also immune to most arrows, except those from Juju Shortbow and Terminator.

Upon spawning and upon reaching 2/3 and 1/3 health, it protects itself with a hitshield (Malevolent Hitshield). This shield has no invincibility frames but each hit drains the shield by 1 regardless of damage. All types of arrows can damage this shield. Purple particles surround the Seraph when its shield is up. Upon being destroyed, it resumes attacking as normal.

is 75% less effective on all Seraphim except when the Hitshield is active.

As with all Slayer bosses, if the Voidgloom Seraph has not dealt damage to a player for some time, it will begin rapidly regenerating. The regeneration immediately stops when it hits a player again. If 4 minutes pass without the boss being defeated, it will despawn, failing the Slayer quest. A timer is shown above its head indicating the remaining time.

Voidling Fanatic and Voidling Extremist spawns are suppressed in the vicinity of a Voidgloom Seraph.

Each tier has all of the abilities from the ones before it.


 * Malevolent Hitshield appears upon spawning and reaching (2/3) and  (1/3). It has 15 hits. The boss does not gain DPS while the shield is up.


 * Malevolent Hitshield appears upon spawning and reaching (2/3) and  (1/3). It has 30 hits. The boss does not gain DPS while the shield is up.


 * Yang Glyphs appear upon reaching (1/2).
 * The Seraph will begin to hold Yang Glyphs, which appear as a beacon. After 2 seconds, it will throw the glyph to a spot within 10 blocks. Any player fighting the Seraph can destroy the glyph by standing adjacent to or on top of it. If it is not destroyed within 5 seconds, it deals 15,000,000 damage to all players fighting the Seraph. The Mithril Coat’s ability can block this damage. Glyphs cannot be thrown when the Hitshield is up. The Seraph will continue to try to throw Glyphs until it is defeated.


 * Malevolent Hitshield appears upon spawning and reaching (2/3) and  (1/3). It has 60 hits. The boss gains +3,000 DPS every 3s the shield is up; this bonus DPS is removed once the shield is destroyed.


 * Yang Glyphs begin at (2/3) and are thrown more often.


 * Nukekubi Fixation heads spawn around the player it is attacking upon reaching (1/3). The heads can be destroyed by looking at them for 0.5s; when they are destroyed, they will play a hissing sound. Each head attacks with a faint blue laser, and deals base 800 DPS, which is doubled for each head alive.


 * Malevolent Hitshield appears upon spawning and reaching (2/3) and  (1/3). It has 100 hits. The boss gains +3,000 DPS every 3s the shield is up; this bonus DPS is removed once the shield is destroyed.
 * Yang Glyphs begin at (2/3) and are thrown more often (same as ).
 * Nukekubi Fixation heads spawn upon reaching (1/3). Each head deals base 2,000 DPS, which is doubled for each head alive.


 * Broken Heart Radiation occurs at (5/6),  (1/2) and  (1/6).
 * The Seraph becomes invulnerable for 8 seconds, taking the appearance of being seated. Explosion particles appear centered on the Seraph when this starts.
 * During this time, it casts 12 Broken Heart Radiation beams: 4 groups of 3 20-block long beams, stacked 1 block on top of each other, each group at 90° to each other. The beams pass through walls. The beams rotate clockwise for the duration, completing 1 full rotation in the 8 seconds. They begin blue and change to purple, then green over the 8 seconds.
 * Any player fighting the Seraph who comes into contact with a beam takes 25% of their health as true damage and has their healing reduced by 12% for 90s. The healing reduction stacks. In addition, any player fighting the Seraph who steps out of reach of the beams begins to take damage rapidly.
 * Yang Glyphs and Nukekubi Fixations can be thrown in this phase.

Minibosses
These are possible Minibosses that could spawn upon killing a Enderman when a Voidgloom Seraph Slayer quest is active. It is also possible that after killing one of these minibosses, another could spawn immediately.

Trivia

 * The Voidgloom Seraph has the 2nd highest  of all non-dungeon enemies in the game, behind Dante.
 * Yang Glyphs and Nukekubi Fixation heads can be thrown through walls, and in extremely rare cases, to inaccessible locations. Heads can still be destroyed by looking above them.
 * Thrown Yang Glyphs can sometimes replace non-solid blocks such as stairs and glass panes. When the Glyph is destroyed, the block will not be replaced until the server restarts.
 * When using Broken Heart Radiation, the particles from the Seraph teleporting to the player will sometimes show. The Seraph will not move.
 * The Seraph's invulnerability during Broken Heart Radiation does not start until the lasers are fired, leaving a brief period of vulnerability in the transitional phase.
 * If a Voidgloom Seraph despawns while attacking with Broken Heart Radiation, the beams will persist indefinitely. These beams are visual only.
 * Its name may be a reference to Seraph of the End.
 * The name of Nukekubi Fixations are a reference to nukekubi, a mythical creature in Japanese folklore whose head detaches from its body.