Checked-in boss knowledge

Gatekeeper Kalos

Researched 2026-11-10 · Lv. 265

T-Boy keeps switching on four weapons and the party shoots them off with Will of Kalos; Phase 2 adds a safe-dome test every 25% of HP.

8 lives in MapleSEA, 20 minutes; the Destiny Weapon mission runs with 3. Weapons activate every 60 s.
Recommended · Authentic Force 330 Authentic Force (380 for the full +25%). CMS lists 550M combat power solo (about 59M each in a 6-party) as a rough reference.

Overview

Shoot the Eyes directly; hit the drone and ball through the generator above or below them as they pass.

MapleSEA v251 slowed Easy and Normal from 60 s.

A weapon's colour counts its shots left: red, then purple, then dark blue.

Each segment ends in a dome test; segment 2-4 adds a curse every minute.

Four weapons Eye of Restraint (left, stun laser), Eye of the Abyss (right, dark arrows), Bombardment Fighter (top drone) and the bouncing Odium sphere.
Activation One more switches on per timer (set by difficulty) and per Watcher's Roar.
Will of Kalos NPC/Gather key to aim, again to fire; refills about every 10 s.
Shots needed Scale with party size and difficulty.
All four on All four still on when the next timer ends ejects the party; freeing any one resets it.

Eye of Restraint Stun laser that chains into his attacks, even in dome tests. Freeing it cancels the shot (SEA v251).
Empowered weapons Chaos/Extreme: three or more active empower all; empowered arrows kill in two hits.
Watcher's Roar One-shot every ~2.5 min that adds a weapon; binds delay it by their length.
Breath and dive Phase 2 Laser Breath kills through Heaven's Door, one floor up too; the dive picks a random player.
Curses below 25% Segment 2-4: a curse every minute; two stacks raise damage taken, a third kills. Harvest the armguard to clear.

Caller and timer One watches Kalos after each teleport; one times Roar, breath, dive and next system.
Number the generators Call 1-5 for drone and ball shots so nobody doubles up.
Ball timing Fire when it is halfway to its generator; the barrier lasts about 2 s.
Hero's Will Use it before the left tower's laser lands.
Authentic Symbol Hotel Arcs Lv 11: +20% damage to Kalos (SEA v251).

Phase 2 dome test every 25%

Dome tests Each 25% segment ends in a three-dome test. A death heals Kalos 5%; success gives a 15 s groggy, timers paused.
Left tower in tests Eye of Restraint keeps firing during dome tests; never start one while it is active.
Threshold control Stop just above each 25% mark (parties use about 0.3-1%); phase once Left is off and fewer than three weapons are up.
Curses in 2-4 Below 25% a curse lands every minute: two stacks raise damage taken, a third kills. Harvest the armguard to clear.
Breath and dive Laser Breath kills through Heaven's Door and reaches one floor up; the dive lands on a random player.

Low risk · Low damage requirement

Easy and Normal, learning parties or low shot accuracy

Cleanse Eye of Restraint first, then usually Eye of the Abyss; whether the ball or the drone comes next is the caller's choice.
Shoot from an angle you have practised and check that each shot connects.
Never start a dome test while the Left tower is active.
Hold a charged shot when the next system is about 10 s away, instead of firing at nothing.

Payoff Fewest stun-chain deaths and safe dome tests

Medium risk · High damage requirement

Chaos and Extreme, where three active weapons empower all of them; an advanced party convention that needs a caller

Shoot one weapon (often the ball or drone) down to its last colour and leave it there as a reserve, with one named player owning it.
When a third weapon switches on, the owner calls and finishes the reserve at once to drop back to two; never sit on three empowered weapons.
Leave a nearly finished weapon up until the next activation, so you do not re-roll a worse one.
Some routes put the Right tower ahead of Left while arrows are empowered; agree that exception in advance, and keep shooting during tests and bursts.

Payoff Keeps the active count under three at tests and bursts

Medium risk · High damage requirement

Any difficulty; the main party damage plan, with an entry sequence and stop margin each party calibrates

Phase 1 - group on one side, wait for his first teleport so everyone has loaded, then bind and burst.
Phase 2 start - group in the middle so his opening dive lands there, step out, then bind and burst.
Stop just above each 25% threshold (about 0.3-1% is a party habit, not an official margin; allow for lingering damage) and phase once Left is off and fewer than three weapons are up, before the next Roar adds a weapon.
Burst again in the 15 s groggy after each dome test, and burst through segment 2-4 quickly.

Payoff One long burst per segment and fewer weapon cycles

Destiny Resolve per clear Normal 10 · Chaos 70 · Extreme 400, split among everyone who entered.
HP estimates Overdrive HP is estimated from the published KMS reductions.

Research checked 2026-11-10.