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Void Caster

EnemiesTower Defense Simulator

Overview

The Void Caster is the final boss of Voidcore mode, alongside with the Void Reaver at the final wave. It does not spawn in naturally, and can be only spawned when the Void Reaver reaches half of its health. It has extremely high amount of health, around half of the Void Reaver's, and has No Target and God. When the Void Reaver is killed, the Void Caster loses its shield. While vulnerable, it begins to revive the Void Reaver for a short period of time.

Stats

Cash
275,000 every 25% health
Enemy Type
boss
Flying
No
Health
650,000
Hidden
No
Lead
No
Top speed
Slow (1.5)

Description

The Void Caster is the final boss of Voidcore mode, alongside with the Void Reaver at the final wave. It does not spawn in naturally, and can be only spawned when the Void Reaver reaches half of its health. It has extremely high amount of health, around half of the Void Reaver's, and has No Target and God. When the Void Reaver is killed, the Void Caster loses its shield. While vulnerable, it begins to revive the Void Reaver for a short period of time. Once revived, the Void Caster becomes invulnerable again. This process repeats itself until the Void Caster is defeated, where it revives the Void Reaver one last time with its Void's Deathwish ability active. The Void Caster has four abilities: Shield, where it shields the Void Reaver, briefly giving it Health Regen, then sets its Shield Health to 40,000. Summon, causing it to summons in a portal that lasts on the map for 16 seconds, with each set of spawns taking up 4 seconds of that duration. Each time, it will spawn 22 enemies, which can be the Mandragora with a 20% chance (2 max, 0.15 delay), Slow King with a 15% chance (1 max, 0.3 delay), Blighted with a 25% chance (10 max, 0.15 delay), Unknown Small with a 15% chance (3 max, 0.15 delay) and Elite Void Rusher with a 25% chance (6 max, 0.03 delay). Revive, which happens when the Void Reaver dies. It will spend 12 seconds reviving the Void Reaver to 420,000 health, but it will also lose the No Target and God attributes for the duration. Upon defeat, it instantly revives the Void Reaver to 240,000 health and activates its Void's Deathwish ability.

Logbook Description

"Before there was anything to call the Old World, the Void was already waiting in the dark. It cannot be considered a place or a creature, but something else entirely. It is a quiet hunger that lurks beneath the notice of every being, the presence that can be felt when nothing is around. The pale flora that blooms in a place where nothing exists is where it finds its peace. It is of one mind, though it wears a thousand faces. One could call it an incurable infection. The brothers feared it, and even Lord Exo and Two X, who feared so little, understood that there was no killing a thing without a body. For the first and final time, they drove it deep down into the foundations of the world, into a dark so total its song could never be heard again. There were a handful of witnesses to this event, but all knew that the Void was only contained, not gone. They all knew the difference, and never spoke of it again. Somewhere in time within the Void, a flower grew, blossoming with a vibrant hue of purple. It was beautiful. From it grew a vessel, and soon, it grew a voice. The child opened her eyes to find nothing but darkness, and smiled the widest smile. Looking down, she picked up a fallen petal from where she grew and crushed it within her palm. The falling dust, scattered through the empty wind, and suddenly flora began to grow. The child was not the Void. The child called it Mother. What she did know was that she was the Void Caster, the daughter of the Void. Once Lord Exo learned of her existence, he saw an opportunity. He did not trust her so much as he used her."

Appearance

The Void Caster has a black body, purple eyes, and purple hair. She wears a purple and black robe with flowers on it, a black shirt, purple pants with a purple high-low skirt that is really short, a purple belt, purple shoes, and black gloves. She has purple horns on her head that have dark purple vines circling them, 2 on each horn, and a halo floating above her head. She carries a staff and a spell book in her hands. Once she has entered her second phase, she starts wearing a hood, and six horns will come out of her torso. On the matchmaking render, her robe is light purple, a light purple shirt, and black strings holding the sides of her robe loosely close. Her torso horns are black with light purple tips that glow. Her face is obscured by her hair, which is purple, and by a cage mask (This is assumed, please change if wrong), similar to the Void Reaver's, but only on her face, which also seems to be extending to her shoulders from the right and left grilles. Her pants are also light purple now, and her skin is purple.

Strategy

Prioritize the Void Caster as soon as the Void Reaver's health reaches 0. Abilities like the Medic's Ubercharge, the Commander's Call to Arms and the Saboteur's Aggressive Toxins are best used here. When Void Caster dies, the Void Reaver will use its Void Deathwish ability where it sprints towards the base. It is advised that you use all of your abilities and move your towers to the back once Void Caster dies to avoid being killed by the Void Reaver.

Update History

5 June 2026 - V2.0.0 Void Caster added. 7 June 2026 - v2.0.6 Summon changed: No longer summons the Void Brute, as it is been removed from the summon pool. Had 2.5% chance to be spawned with 1 max spawns and 3 delay. Slow King chance decreased from 17.5% to 15%. Mandragora chance increased from 15% to 20%. Mandragora max spawns decreased from 6 to 3. 19 June 2026 - v2.1.0 Summon changed: Unknown Small max spawns decreased from 9 to 5. Slow King max spawns decreased from 6 to 3. 17 July 2026 - v2.3.0 Cash given changed from 1,000,000 on death to 275,000 every 25% health lost. Revive Void Reaver health increased from 360,000 to 420,000. Shield changed: Shield Health increased from 25,000 to 40,000. Shield duration increased from 2 to 4. Ability cooldown increased from 25 to 45. Summon changed: Elite Void Rusher delay decreased from 0.2 to 0.03. Elite Void Rusher max spawns decreased from 20 to 6. Unknown Small delay decreased from 0.25 to 0.15. Unknown Small max spawns decreased from 5 to 3. Blighted delay decreased from 0.25 to 0.15. Blighted max spawns decreased from 20 to 10. Slow King delay decreased from 0.6 to 3. Slow King max spawns decreased from 3 to 1. Mandragora delay decreased from 0.2 to 0.03. Mandragora max spawns decreased from 3 to 2.

Patch history

The Void Caster is the first boss enemy that gets slower upon activating its second phase. The Void Caster has the longest logbook description in the entire game, also having the only description with multiple paragraphs. The Void Caster could be considered as the only Boss enemy not to naturally spawn in. The Awakened Fallen King may be considered an enemy that does not naturally spawn into the Hidden Wave, but it may also be considered the second phase of the Fallen King, which does naturally spawn into Fallen mode. The Void Caster was planned to be a secondary boss for Hardcore mode back in 2020, but was cut due to time and technical constraints. It is likely that Void Caster being cut is the reason why Hardcore mode initially had two Void Reavers before v1.2.1.

Community-sourced from tower-defense-simulator-roblox.fandom.com · Jul 25, 2026

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Some facts and text on this page are adapted from the Tower Defense Simulator community wiki, available under CC BY-SA. Game art © their respective creators.