Arcanist Decapitator is not only one of the harder Gateekeepers in the Yabbashah Block of Tartarus in ; it's also - surely - got one of the most memorable names. But that's rather🍎 beside the point; no doubt, you're either here for help with how to defeat it, or you just want to see ho🧜w somebody else did so.

Related
Persona 3 Relo𝕴ad: Yabbashah Block Three Overview

One of the shorter blocks of Tartarus is somehow also one of the most 🐲intriguing, thanks𒐪 to new additions in Monad.

We've done our best to demonstrate the latter, and it's all about using divide-and-conquer to your best ability while dealing with the repercussions of being forcꦍed to choose two party members with weaknesses to the enemy's arsenal. Don't worry 🌳- you've got this.

Arcanist Decapitator Overview

Preparing to fight the Arcanist Decapitator in Persona 3 Reload

Affinities and Weaknesses (Arcanist Decapitator)

Slash

Strike

Pierce

Fire

Ice

Electric

Wind

Light

Dark

Almighty

-

-

-

-

Null

Null

-

-

-

Affinities and Weaknesses (Heat Overseer)

Slash

Strike

Pierce

Fire

Ice

Electric

Wind

Light

Dark

Almighty

-

-

-

Absorb

Absorb

Weak

Weak

-

-

-

Affinities and Weaknesses (Sky Overseer)

Slash

Strike

Pierce

Fire

Ice

Electric

Wind

Light

Dark

Almighty

-

-

-

Weak

Weak

Absorb

Absorb

--

-

Arcanist Decapitator is one of the trickiest fights you will have encountered up to this point, as it is flanked by two other foes, and all three enemies have separate strengths and weaknesses. Because of this𒉰, you cannot simply choose a terrific teammate or two to do most of the dirty work for you.

Instead, this fight will rely upon Makoto's wellspring of different Personas even more than usual. That doesn't mean there aren't some decent picks: Arcanist Decapitator casts Bufula/Mabufula; Garula; and Agilao.

Thus, ideally, you would want to avoid bringing party members who are weak to Ice, Wind, or Fire. This makes Junpei, Mitsuru, and Akihiko are all liabilities. Unfortunately, since you probably only have Makoto, Yukari otherwise, you'll need to choose two of them to bite the bullet.

Since Heat Overseer is weak to Fire and Ice, and Sky Overseer is weak to Electric and Wind, it might seem like there's no wrong choice; but Arcanist Decapitator resists Ice attacks, so the best party member to leave behind is Mitsuru, who casts Ice spells.

Arcanist Decapitator Battle Strategy

Arcanist Decapitator revealing its head in Persona 3 Reload

If you can see the above screenshot, you will notice that we had Mitsuru in our party despite ou🍰r tip. Look, we didn't know yet!

Arcanist Decapitator has no resistance to physical attacks of any kind, so you should probably have Makoto, Junpei, and Akihiko hit it with Slash, Strike, and Pierce skills on a routine basis. As is often the case, we would love to tell you to let Yukari join in on the Pierce with her bow, but Yukari will be on healing duty.

That said, eliminate Heat Overseer and Sky Overseer first. They serve as subordinates to the Arcanist Decapitator, in that they will cast Fire Break and Wind Break on party members who are resistant to such spells, especially Makoto if you switch to a Persona with those resistances (which you should).

Scanning Heat Overseer in Persona 3 Reload

Arcanist Decapitator also uses Tarukaja, which raises its Attack, making its already quite-threatening magic skills all the moreꦰ painful. If it hits a weakness and gains a 'One More', it can two-shot teammates in a single turn.

Based on our experience with the battle, Arcanist Decapitator seems to cast Tarukaja only once the Overseers are beaten, so if you think it's safer to keep them around for a while, don't let us stop you. W𓄧e felt it was better to get rid of them right off the bat, as it limits the enemy turns in general.

Hit the Overseers with whichever elements they're weak against, but avoid multi-target casts, since they will be healed by their specific strengths. Damaging one but healing the other for roughly equal amounts is akin to doing nothing unless you're targeting one of them exclusively, in which case it's fine!

Related
Person🦄a 3 Reload: How To Defeat Ochlocratic Sand

Put the Ocꦿhlocratic Sand six feet under with our Persona 3 Reload guide on this Tartarus Gatekeeper.