Last updated 2026-05-27 · Based on ~14 hours of personal testing
Ghidorah in Kaiju Alpha: Monster Zero + Void Ghidorah
Ghidorah shows up twice in Kaiju Alpha and most players I have talked to conflate the two. Monster Zero is the playable kaiju — the three-headed silhouette is the dead giveaway, even though SULU KAKA does not use the King Ghidorah name directly. Void Ghidorah is a separate entity: a raid boss with around 42,000 HP that you fight, not play. This guide covers both. Monster Zero unlock costs roughly 420 to 480 U-cells, sits firmly in A tier as of Update 24, and runs a gravity-well kit that punches above its tier in multi-target events. Void Ghidorah is the middle-tier boss between Mechagodzilla Stage 3 and Dread Behemoth — a useful DPS benchmark for whichever kaiju you settle on. The numbers below come from my own play sessions across about 14 hours and from community testing notes I cross-referenced before posting anything.
Key Takeaways
Two distinct Ghidorah entities: Monster Zero (playable, A tier) and Void Ghidorah (boss, ~42K HP)
Monster Zero costs around 420–480 U-cells, no prerequisite kaiju, no level gate
Signature move is the gravity well — pulls grouped targets, AOE follow-up rotation
Smart pick for event PvE and group fights; outclassed by Destoroyah Form 4 in clean 1v1 PvP
Void Ghidorah farming: Destoroyah Form 4 or Godzilla Minus One clears in around 25–35 seconds
The two Ghidorahs in Kaiju Alpha
This is the single most common point of confusion I see in the unofficial Discord threads: players asking how to unlock Void Ghidorah, or how to farm Monster Zero for U-cell rewards. Neither makes sense — and the page rankings on this topic suffer because guides usually pick one variant and pretend the other does not exist. The short answer:
Variant
Role
What it is
Monster Zero
A Tier — Playable
The King Ghidorah-styled kaiju you unlock and play. Three heads, gravity-well kit, ~420–480 U-cells to unlock. No prerequisite. Full unlock walkthrough.
Void Ghidorah
Raid Boss
A boss enemy with ~42,000 HP. You fight it for event progression and U-cell drops. Cannot be unlocked or played. Sits between Mechagodzilla Stage 3 (~33K HP) and Dread Behemoth (~85K HP) in difficulty.
Treat the rest of this guide as two separate guides stapled together. Sections marked with the playable badge are about Monster Zero — your unlock, kit, rotation, and tier placement. Sections marked with the boss badge are about Void Ghidorah — how to fight it, which kaiju clear it fastest, and how to use its HP as a build benchmark.
PlayableMonster Zero stats
SULU KAKA does not publish server-side stat sheets for any kaiju, Monster Zero included. The figures below come from my own timing and damage measurements during roughly 9 hours of focused Monster Zero play, with the remaining 5 hours of my 14-hour total spent on the Void Ghidorah boss fight. Entries marked community-reported come from cross-referencing posts in the unofficial Discord — I have not independently re-verified those.
One thing the table cannot show — Monster Zero's practical performance depends heavily on positioning. The gravity-well payoff lands when you catch 3+ targets in the radius. In a clean 1v1 against a kaiju that respects spacing, the well becomes mostly a damage-over-time pulse and the burst rotation drops to the 320–360 single-target numbers. Worth knowing before you spend 420 U-cells expecting an S tier feel.
PlayableHow to unlock Monster Zero
The unlock is straightforward — no event window, no progression chain, no level gate that I or anyone in the community has hit. If you can afford the U-cells, you can buy it. The full step-by-step is on the dedicated Monster Zero unlock guide; the condensed version is here.
Redeem active codes first. Three to four working codes drop 150–400 U-cells combined. Always check the active codes page before spending on any unlock — codes expire without notice and you cannot retro-claim them.
Save approximately 420–480 U-cells. The in-game unlock menu is the source of truth on the exact figure. SULU KAKA has adjusted pricing in past updates by 20–50 U-cells without announcement.
Open the forms / kaiju unlock menu and locate Monster Zero. The three-headed silhouette is the clearest visual marker — SULU KAKA may not use the King Ghidorah name directly because of trademark caution.
Confirm the purchase. Unlock is immediate. No additional event mission required.
Practice the gravity-well rotation in a low-stakes server. Monster Zero has a clear learning curve — mistiming the well wastes the AOE payoff that justifies the U-cell cost. I spent at least an hour on rotation drills before taking it into ranked events.
PlayableMonster Zero ability breakdown
Monster Zero runs the same 1-5-R-T slot layout as every other kaiju. The kit is built around the gravity well — every other ability either sets up the well or capitalises on it. Cooldown numbers below come from my own stopwatch timing across multiple sessions; SULU KAKA does not publish server-side cooldowns.
Gravity Beam
Slot 1 · Ranged · Cooldown ~5s
Medium-range projectile that deals moderate damage and slightly slows the target on hit. This is the poke and the rotation opener. Most rotations start by landing Slot 1 from a safe distance to confirm the kill window before committing to the Slot T gravity well.
Cluster Pulse
Slot 5 · AOE Close · Cooldown ~7s
Close-range AOE that damages everything in a small radius around Monster Zero. Best used after the gravity well pulls targets in — Slot T followed immediately by Slot 5 is the textbook AOE burst sequence. Solo against one target, Cluster Pulse is the weakest ability in the kit.
Wing Shield
Slot R · Defensive · Cooldown ~9s
Brief defensive — Monster Zero wraps its wings to absorb a portion of incoming damage. Community reports suggest around 40% damage reduction during the window, which I cannot confirm precisely but felt roughly correct in my testing. Window duration is short, maybe 1.5 seconds. Use it to survive an opponent's burst while your gravity well comes off cooldown.
Gravity Well
Slot T · AOE Pull · Cooldown ~14s
The reason Monster Zero exists in tier discussions. Drops a gravity field at a target location, pulling everyone within ~22 studs to the center and damaging them during the pull. Against 3+ targets this is genuinely an A+ tier skill — the pulled group eats your Slot 5 follow-up for free. Against a single target who rolls out of the radius, you wasted a 14-second cooldown for nothing.
PlayableWhy I rank Monster Zero at A tier (not S)
I have seen Monster Zero called S tier in a few community posts, usually right after someone landed a beautiful well-into-Slot-5 sequence in a 5v5 event. I do not agree. Across my 25 controlled test rotations — both 1v1 PvP and multi-target event content — Monster Zero topped out at A tier consistently. The reasoning, briefly:
In 1v1 PvP, the gravity well becomes a damage-pulse rather than the rotation enabler. Single-target burst lands at 320–360 against a target who eats the well — that is solid A tier output but well below Destoroyah Form 4's 480–540 ceiling, and below Godzilla Minus One's 400–440 consistent floor. Against a target who walks out of the radius, the burst drops further. My win rate against S tier opponents in 1v1 was roughly 30% across about 20 matches — respectable, not dominant.
In multi-target events, the picture shifts. AOE rotation hits ~580 total damage when the well catches 3+ targets, which is competitive with anything in S tier for event clearance speed. If you primarily play event PvE, Monster Zero feels like A+ tier in practice. The honest tier verdict has to average both modes — and averaging produces a solid A tier placement, not S. My sample of 14 hours is on the smaller side and the tier-boundary call between A and A+ is close enough that another 14 hours could move it either way.
Monster Zero vs alternatives
Three comparisons worth making before you spend 420–480 U-cells: Monster Zero vs Suko (the cheaper A tier stepping stone), vs Godzilla Minus One (the S tier saving target), and vs Destoroyah Form 4 (the highest-ceiling option).
Monster Zero vs Suko
Suko is the ~350 U-cell A tier kaiju most players unlock first — beginner-friendly, forgiving rotation, decent single-target damage. Monster Zero costs around 70–130 more U-cells and trades that price for the gravity well's AOE potential. If you mostly play 1v1 PvP, save the extra U-cells and grab Suko — Monster Zero does not outperform it in single-target enough to justify the gap. If you play events with 3+ enemies on screen regularly, the well payoff justifies Monster Zero.
Monster Zero vs Godzilla Minus One
Minus One is S tier at around 600 U-cells. The 120–180 U-cell gap above Monster Zero buys you consistently higher single-target output and a more forgiving rotation. If you are already past about level 25 and you grind regularly, saving the additional U-cells for Minus One is the rational call — you skip the A tier midpoint and land in S tier directly. The trade-off is you wait longer, and you miss out on Monster Zero's AOE specialisation that Minus One does not match.
Monster Zero vs Destoroyah Form 4
Different roles, different tiers, different U-cell brackets. Destoroyah Form 4 at about 600 U-cells is the single-target burst king — Slot 1 into Slot T finishes most matchups in under 4 seconds when the window lands clean. Monster Zero is the group-fight specialist. Neither replaces the other. If you have the U-cells for both, unlock Destoroyah Form 4 first for PvP and add Monster Zero later for event variety. Detailed Destoroyah numbers on the Destoroyah page.
BossVoid Ghidorah — the raid fight, not the kaiju
Void Ghidorah is the boss encounter that shares the Ghidorah name and aesthetic but is functionally unrelated to Monster Zero. You fight it. You do not unlock it. There is no playable Void Ghidorah and there has been no announcement from SULU KAKA that one is coming. The fight matters because Void Ghidorah's 42,000 HP is the middle data point in the in-game DPS planning model.
For DPS reference: Mechagodzilla Stage 3 has approximately 33,000 HP, Void Ghidorah sits around 42,000 HP, and Dread Behemoth runs to roughly 85,000 HP at standard difficulty. Plug 42,000 into the DPS Calculator's target HP slider to see your time-to-defeat with any kaiju build. A 20% DPS gap between builds translates into a 20% TTK gap on this fight — which adds up fast across a 50-run farming session.
Practical fight notes from my ~5 hours of Void Ghidorah runs:
Best clear picks: Destoroyah Form 4 (~28 sec TTK in my runs) and Godzilla Minus One (~33 sec TTK). Monster Zero, despite the name connection, is actually a poor pick for this fight — the well does not benefit from a 1v1 boss encounter and single-target output trails the S tier options.
Avoid: Aggregate-family kaiju (Destoroyah Aggregate, etc.). The wing-sweep attack — Void Ghidorah's highest-damage move — punishes melee-committed kaiju heavily. I lost about 60% of my Aggregate attempts to the wing sweep mid-rotation.
Positioning: Medium range is the safest pocket. Too close and the wing sweep covers your whole arc. Too far and the gravity beam from Void Ghidorah's center head deals stacking damage.
U-cell rewards: Community reports suggest 40–90 U-cells per successful Void Ghidorah clear at standard difficulty. I did not track this precisely across enough runs to confirm a tight range — that figure may shift with event multipliers.
Common questions about Ghidorah in Kaiju Alpha
Is Ghidorah in Kaiju Alpha?
Yes — Ghidorah appears in two distinct roles. Monster Zero is the playable A-tier kaiju modelled after King Ghidorah (the three-headed silhouette is unmistakable). Void Ghidorah is a separate entity: a raid boss with around 42,000 HP, sitting between Mechagodzilla Stage 3 (~33,000 HP) and Dread Behemoth (~85,000 HP) in difficulty. The two are mechanically unrelated — you unlock Monster Zero to play it, and you fight Void Ghidorah to farm it.
How do you unlock Ghidorah (Monster Zero) in Kaiju Alpha?
Monster Zero — the playable Ghidorah-style kaiju — costs approximately 420–480 U-cells in the standard unlock menu. There is no prerequisite kaiju, no level gate, and no event requirement (verified against community reports through Update 24). Save up U-cells through regular play and redeem active codes first; three to four working codes typically drop 150–400 U-cells, meaningfully cutting the grind.
What tier is Ghidorah in Kaiju Alpha?
Monster Zero (the Ghidorah-family playable kaiju) is solid A tier as of Update 24 — not S tier. Its gravity-well ability gives it AOE crowd-control that S tier picks like Destoroyah Form 4 and Godzilla Minus One do not have, but its single-target burst output is lower. In multi-enemy event content it competes well; in clean 1v1 PvP it falls behind the top of S tier.
How much HP does Void Ghidorah have in Kaiju Alpha?
Void Ghidorah has approximately 42,000 HP at standard difficulty — community-verified across multiple test runs. That makes it the middle-tier raid boss between Mechagodzilla Stage 3 (~33,000 HP) and Dread Behemoth (~85,000 HP). For DPS planning, plug 42,000 into the DPS Calculator's target HP slider to see your time-to-defeat with any kaiju build.
What is Ghidorah's best move in Kaiju Alpha?
Monster Zero's signature skill is the gravity well — it pulls nearby opponents to a central point and damages them in the process. In multi-target events this functionally groups enemies for a follow-up AOE rotation, which is the rotation pattern that makes Monster Zero worth the U-cells. In PvP it disrupts opponent spacing and creates forced engagement windows. The ranged gravity beam (Slot 1) and the close-range cluster pulse (Slot 5) round out the kit.
Should I unlock Monster Zero or wait for an S tier kaiju in Kaiju Alpha?
If you mostly play event PvE or group fights, Monster Zero is a smart 420–480 U-cell purchase — the gravity-well kit performs above its tier in those scenarios. If you primarily grind PvP and you are already past ~level 25, save the additional 120–180 U-cells to reach Godzilla Minus One (~600 U-cells, S tier, more consistent in clean 1v1). The honest middle path is Suko at ~350 U-cells as a stepping stone, then Monster Zero, then upgrade to an S tier form later.
How do you beat Void Ghidorah in Kaiju Alpha?
Bring a high-DPS single-target kaiju — Destoroyah Form 4 or Godzilla Minus One are the cleanest picks against Void Ghidorah's ~42,000 HP. Stay at medium range to avoid its wing-sweep attack (the highest-damage move in its kit). The Slot 1 → Slot T burst rotation on Destoroyah Form 4 typically defeats Void Ghidorah in around 25–35 seconds at standard difficulty. Avoid melee-focused kaiju like the Aggregate forms for this fight — the wing-sweep punishes them.
How I tested — methodology
I tested Monster Zero and Void Ghidorah in Kaiju Alpha by SULU KAKA (Roblox Place ID 139769003880269) across roughly 14 hours of direct play. About 9 hours went into Monster Zero — PvP 1v1 ladder, multi-target event content, and rotation drills in low-stakes servers. The remaining ~5 hours were Void Ghidorah boss runs at standard difficulty, with a mix of S tier and A tier kaiju to measure clear times.
Damage and HP figures came from controlled rotations against the same target type on the same server type. I do not have access to server-side logs, so cooldown timings are stopwatch estimates averaged across 15+ measurements per ability. The community-reported items (Monster Zero base HP, Wing Shield damage reduction percentage, Void Ghidorah U-cell drop range) are sourced from Discord community posts I cross-referenced — I have not independently re-verified those, and I label them explicitly so you can apply your own confidence weighting.
My sample of 14 hours is small for tier confidence work. The A tier placement for Monster Zero is supported by the data I have, but the boundary between A and A+ is close enough that a different sample could shift it. Where I am less certain, I use qualifiers like "community-reported," "around," or "based on my sample."
Last tested in-game: May 26, 2026, Update 24 live servers.
