Persona 5 / Persona 5 Royal - Shadow Okumura (Mammon) Boss Guide

Boss guide for Shadow Okumura (Mammon) in Persona 5 / Persona 5 Royal. This includes the boss enemy's stats, skills, and a strategy guide.

Shadow Okumura (Mammon) Boss Guide


Okumura Palace Guide

Boss Stats

Level 43
HP 200
SP 100
Strength 21
Magic 22
Endurance 15
Agility 24
Luck 10
EXP 7,500
Money 28,000
Item Rewards

Boss Skills

1) Work Order

Call reinforcements when there are less than four robots.

2) Sacrifice Order

Order one worker robot to self-destruct on the next turn.

3) Rakunda

Defense debuff on a single target for three turns.

4) Tarunda

Attack debuff on a single target for three turns.

5) Dekaja

Nullifies the effects of the party’s buffs.

6) Famine’s Breath

High chance to inflict Hunger on a single target.

7) Famine’s Scream

Moderate chance to inflict Hunger on the entire party.

8) Executive Punch

Strong physical damage to a single target. Often attacks Haru.

9) Makarakarn

Shields an ally to repel one magic spell.

10) Big Bang Order

Charges for Big Bang Challenge.

11) Big Bang Challenge

Delivers strong Almighty damage to the entire party and inflicts Hunger. If the target that receives the damage has Hunger, the damage is absorbed and the status effect is removed.

12) Heat Riser

Buffs an ally’s attack, defense, and agility for three turns.

Boss Strategy

1) Clear the waves of minions using spells they are weak against

Your main target isn’t really Mammon, but his lackeys instead. The first wave is weak to fire and wind. Having Hell Biker armed with Maragi is very helpful. The next set is purely wind skills, so having Morgana or a persona with wind skills is a good idea. The next set is a test of Psy and Agi skills. If you have Haru Okumura, have her cast psy attacks. After that, attack the two blue lackeys in the middle with fire attacks.


The next set has three golden lackeys and one lanky, tall one. The tall lanky one is weak to nuclear attacks, making Makoto a good choice. The last three can be taken out with Haru’s Psy skills. Next, you have four tall and lanky lackeys, three red and one blue. The red lackeys are weak to nuke and electricity, while the blue are weak to wind. Next set has two large green lackeys and two blue lanky ones. The two large green lackeys can be shoved off with psy attacks and two blue lanky lackeys lose out against wind skills.

2) Look after your HP and cast debuffs

After he sends the waves at you, Kunikazu Okumura sends Execurobo MDL-ED, a massive black robot that dons a formal suit. It doesn’t have any weaknesses, so just attack how you want. If you have debuff spells, they could help speed up the fight. Spells like Rakunda and Matarukaja will definitely help in defeating the boss. However, do watch out for its Charge spell. It can hit you hard if you’re not careful. Also, having Hunger will save you from its Big Bang Challenge attack.

Once you defeat the large black shadow, you finally get to put down Kunikazu Okumura. He’s not that hard, so keep whittling him down to finish the palace.

Boss Battle Video (Joker, Fox, Queen, and Noir)

← Cognitive Wakaba Isshiki Boss Guide Shadow Niijima Boss Guide →

Other Boss Guides

Boss Guides
Shadow Kamoshida (Asmodeus) Shadow Madarame (Azazel) Shadow Kaneshiro (Bael)
Cognitive Wakaba Isshiki Shadow Okumura (Mammon) Shadow Niijima (Leviathan)
Loki Shadow Shidou (Samael) Yaldabaoth (God of Secrets)
Mini-Boss and Secret Boss Guides
Nue Shiki-Ouji Cognitive Sugimura
Thor Cognitive Politician Ooe Shadow Former Noble
Shadow TV President Shadow IT President Shadow Cleaner
Uriel Raphael Gabriel
Michael Reaper Justine and Caroline

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  1. And ur wrong about the first wave..first wave is green right..theyre weak to garu. And yellow is ice,blue is i forget lol nd red is elec. The big green ones are psi..n tht black one ur advice may b sound. Hes the only tht keeps getting me..ass made me almost throw my him to a inch of life..did big bang challenge and i fucking DIED ..with full health..fucking ass..