Persona 5 Strikers - Sendai Jail Lock Keeper Boss Guide

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

The Sendai Jail Lock Keeper is the second 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 Arcade City’s Gatorre Coffee Shop in Sendai.

Clear Rewards

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

Sendai Jail Monarch Boss Guide

Trophies

Trophy	How to Unlock
Cage of Vanity Conquered	Clear Sendai Jail.

Trophies List

Sendai Jail Lock Keeper Information

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

Sendai Jail Lock Keeper Stats

Sendai Jail Lock Keeper Strength and Weaknesses

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

Sendai Jail Lock Keeper Skills

Sendai 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: Eiha/Eiga or Maeiha (Curse), Bufu/Bufula or Mabufu (Ice), Kouha/Kouga or Makouha (Bless)	Has Curse from Arsene, Ice, and Bless skills from other Personas obtained or fused. Can also play the role of healer, buff caster, and debuff caster.
		Recovery: Dia/Diarama or Media, Recarm, Amrita Drop
		Buff: Tarukaja, Rakukaja, Sukukaja
		Debuff: Tarunda, Rakunda, Sukunda
Fox	Goemon	Damage: Giant Slice or Vicious Strike (Physical), Bufu or Mabufu (Ice)	Has access to Ice skills that the Lock Keeper is weak against. Has access to Physical skills that the Lock Keeper does not have resistances against. Inflicts Freeze status ailment on the Lock Keeper that causes it to take increased damage from Physical and Gun attacks. Can use a buff skill like Sukukaja to increase an ally’s evasion/critical evasion in battle.
		Buff: Sukukaja
Noir	Milady	Damage: Hysterical Slap (Phys), Snap (Gun), Psi or Mapsi (Psy)	Has access to Physical, Gun, and Psychokinesis skills that the Lock Keeper does not have resistances against. Also, Physical and Gun attacks from Noir can deal Technical damage to the Lock Keeper when afflicted with Freeze status ailment.
		Recovery: Amrita Drop
Sophie	Pithos	Damage: Kouha or Makouha (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: Dia/Diarama or Media
		Debuff: Rakunda

Sendai 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) and Fox.

Cure Inflicted Ailments

If a party member got inflicted with a status or mental ailments such as Dizzy or Rage, make sure that you have access to a Status Recovery skill called Amrita Drop or Amrita Shower to cure it. You can also use status recovery items to remove the status or mental ailment if available. Status Recovery skills can be accessed by Joker (from other Personas) and Noir.

Use Ice, Bless, and Curse Attacks

The Sword Lock Keeper is weak to Ice, Bless, and Curse attacks which Fox, Sophie, and Joker can cover. 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 and Gun Attacks

When the mini-boss is inflicted with a status ailment such as Freeze, deal technical damage by using Physical and Gun attacks. Switch between Joker, Fox, and Noir to avoid running out of HP.

Don’t Go Crazy with the Offense

The Lock Keeper will sink to the ground and teleport to another spot in order to avoid your attacks further. Don’t go all out to the boss and observe to avoid wasting HP and SP.

Unleash Showtime Attacks

While engaging the Sword 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.

Sendai Jail Lock Keeper Boss Video

Here is a boss fight video against Sendai 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