Red Demon boss guide: weaknesses & drops (7DSO)

Boss

Red Demon

Difficulty

World 4

Min. BP19,495

Players

Stats

HP593,698

ATK9,592

DEF3,441

Weaknesses

Earth20%

Holy20%

Resistances

Fire30%

All Elements10%

Interactive Map

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Gluttonous FireIn-game tip

The Red Demon's attack increases when it takes Fire damage, so take caution. However, if it doesn't take Fire damage for a set duration, its defense decreases.

Bring Earth carries and bench your Fire DPS here, because every Fire hit it eats only feeds its attack stat.
If you have nothing but Fire damage, just hold off attacking for a stretch on purpose, its defense drops and you get a free burst window.

Cold EarthIn-game tip

The Red Demon becomes vulnerable to Petrify when stunned by a counter skill. If petrified, it becomes stunned for an extended duration.

Save a counter skill for its telegraphed swings, the stun opens it to Petrify and that lock lasts much longer than a normal stagger.
Stack a Petrify applier with Earth damage so the moment it's countered you chain the petrify and dump your whole rotation safely.

Moveset — the real numbers

Its AI decides when it uses what, so there is no fixed rotation to memorize — but every damage %, reach, duration and crowd control below is exact.

Attack	Damage (% of ATK)	Reach	Duration	Control
Fire eruptionIts hardest single hit, a point-blank fire burst that launches you. Bait it then sidestep before the circle fills.	—	5.5m	7.47s	AirBorne
Tight blastA small but very heavy fire pop with a knock-up. The ring is narrow, so a short dash fully clears it.	—	3m	5.47s	AirBorne
Sweeping infernosFour cones that grow outward each hit, reaching far down the lane. Move to the boss's side instead of running back.	—	16.5m	5.09s	AirBorne
Expanding ringsThree shockwaves spreading from the center, each knocks up. Stay just inside one ring then step into the calm gap.	—	12.5m	5.93s	AirBorne
Arena novaA massive 16m blast that covers most of the floor. Pre-position at the very edge before it goes off.	—	16m	8s	—
Flame beamA long five-hit fire stream straight ahead. Strafe out of the line early; the later hits hurt most.	—	10m	4.6s	—
Combo finisherThe launching cap on its two quick cone swipes. Once you see the first two pokes, expect this and roll.	—	4m	3.6s	AirBorne
Lingering flareA wider knock-up burst seen in the event version. Treat it like the eruption but give yourself more room.	—	5.5m	7.47s	AirBorne
Wide cleaveA 6m frontal swing it throws between casts. Stay off the front arc and punish from the flank.	—	6m	4s	—
Line pokeA quick straight fire jab in melee range. Cheap to dodge with a small side step, good window to reset spacing.	—	9m	4.47s	—

The phase descriptions are the official in-game boss tips; the tactical bullet points are our advice. Every damage value, reach, duration and crowd-control effect in the moveset is the boss's real in-game value. Attack names are descriptive labels.