Persona 5 Strikers - Osaka Jail Lock Keeper Boss Guide

Guide on How to Defeat Bazooka Lock Keeper in Persona 5 Strikers

The Osaka Jail Lock Keeper is the fifth and last Lock Keeper mini-boss enemy the Phantom Thieves must defeat in Persona 5 Strikers (or Persona 5 Scramble). The mini-boss is encountered at the Trauma Cell overlaying the Metaverse version of an Akira Konoe’s household.

Clear Rewards

Once you defeated the Osaka Jail Lock Keeper, you can now access the boss fight against the Osaka Jail King or Monarch.

Osaka Jail Monarch Boss Guide

Trophies

Trophy	How to Unlock
Cage of Arrogance Cracked	Clear Osaka Jail.

Trophies List

Osaka Jail Lock Keeper Information

Here is a breakdown of the mini-boss’ stats, strengths and weaknesses, and skills:

Osaka Jail Lock Keeper Stats

Osaka Jail Lock Keeper Strength and Weaknesses

–	–	–	–	Weak	–
					Technical
–	Weak	Weak	Weak	–	Weak

Osaka Jail Lock Keeper Skills

Osaka Jail Lock Keeper Party Build

Here is our recommended party member setup against the mini-boss. You can choose other party members if you want to.

Member	Persona	Essential Skills	Notes
Joker	Arsene	Damage: Eigaon or Maeigaon (Curse), Ziodyne or Maziodyne (Elec), Freidyne or Mafreidyne (Nuke), Kougaon or Makougaon (Bless)	Has Curse from Arsene, Electricity, Nuclear, and Bless skills from other Personas obtained or fused. Can also play the role of healer, buff caster, and debuff caster.
		Recovery: Diarahan or Mediarama, Recarm or Samarecarm, Amrita Drop or Amrita Shower
		Buff: Matarukaja, Marakukaja, Masukukaja
		Debuff: Tarunda, Rakunda, Sukunda
Skull	Captain Kidd	Damage: Megaton Raid or Deathbound (Phys), Ziodyne or Maziodyne (Elec)	Has access to Electricity skills that the Lock Keeper is weak against. Has access to Physical skills that the Lock Keeper does not have resistances against. Inflicts Shock status ailment on the Lock Keeper that causes it to take increased damage from Physical, Gun, and Nuclear attacks. Can use a buff skill like Matarukaja to boost allies attack power in battle
		Buff: Tarukaja or Matarukaja
Queen	Johanna	Damage: Flash Bomb (Phys), Freidyne or Mafreidyne (Nuke)	Has access to Nuclear skills that the Lock Keeper is weak against. Has access to Physical skills that the Lock Keeper does not have resistances against. Also, Nuclear attacks from Queen can deal Technical damage to the Lock Keeper when afflicted with Shock status ailment. Can use a buff skill like Marakukaja to boost allies defense power in battle. Can also use healing skills.
		Recovery: Diarahan or Mediarama
		Buff: Rakukaja or Marakukaja
Sophie	Pithos	Damage: Kougaon or Makouga (Bless)	Has access to Bless skills which the Lock Keeper is weak against. Can use a debuff skill like Rakunda to reduce the enemy defense power. Can also use healing skills.
		Recovery: Diarahan or Mediarama, Recarm or Samarecram
		Debuff: Rakunda or Marakunda

Osaka Jail Lock Keeper Strategies

Here is a breakdown of the battle strategies against the mini-boss:

Carry SP Recovery Items

Before engaging the boss, bring a stock of HP and SP recovery items. These items can be bought from accessible vending machines, food stands, stores, and restaurants. You can also buy ingredients from Sophia’s Shop and other real-world stores. Then, cook these ingredients for additional HP and SP items through Joker’s Kitchen.

Joker’s Kitchen Guide

Land Debuffs

Start the battle by landing multiple debuffs on the Lock Keeper. Debuffs can be in the form of attack power decrease (Tarunda), defense power decrease (Rakunda), and evasion/critical evasion decrease (Sukunda). These debuffs can be accessed by Joker (from Arsene and other Personas) and Sophie.

Cast Buffs

Follow-up the debuffs with party member buffs. Buffs can be in the form of attack power increase (Tarukaja), defense power increase (Rakukaja), and evasion/critical evasion increase (Sukukaja). These buffs can be accessed by Joker (from other Personas), Skull, and Queen.

Use Elec, Nuke, Bless, and Curse Attacks

The Bazooka Lock Keeper is weak to Electricity, Nuclear, Bless and Curse attacks which Skull, Queen, Sophie, and Joker can handle. Continue on using elemental attacks in order to break the shields and stagger the boss. Make use of narrow range elemental skills if you’re close and wide range elemental skills if you’re far from the boss.

Deal Technical Damage using Phys, Gun and Nuke Attacks

The Lock Keeper is susceptible to status ailment skills such as Shock. If the boss is inflicted with Shock status, use a Physical, Gun, or Nuclear attack to deal additional damage to the boss.

Unleash Showtime Attacks

While engaging the Bazooka Lock Keeper, you may build up your showtime gauge. When it’s available, unleash the showtime attack against the boss. If Joker’s showtime attack is available, make sure he has the right Persona that can capitalize on the weakness of the boss.

Osaka Jail Lock Keeper Boss Video

Here is a boss fight video against Osaka Jail Lock Keeper. The battle is already timestamped so you no longer need to browse through the whole video:

Other Bosses

All Jail Monarchs

Lock Keepers

Powerful Shadows

Dire Shadows