Looking for a new challenge in Jujutsu Infinite? The Undead Monarch boss is one of the main attractions of the Halloween 2026 event. If you’re collecting Jujutsu Infinite Codes or trying to improve your character, this limited-time boss fight is worth checking out. But where does it appear, how can you defeat it, and what rewards can you get?
Let’s answer the most common questions in a simple way.
What Is the Undead Monarch in Jujutsu Infinite?
The Undead Monarch is a special Halloween event boss introduced in Jujutsu Infinite’s October 2026 update. Unlike regular enemies, this encounter gives players an opportunity to earn exclusive seasonal rewards.
The event also introduces Halloween-themed equipment, collectibles, and a special environment. This makes it a good opportunity to collect items that may not be available through normal gameplay.
Where Can You Find the Undead Monarch?
One of the biggest questions players have is where to find this boss.
The Undead Monarch appears in servers with at least three players. According to the published spawn information, the boss appears at the beginning of each hour.
Here are a few things to remember:
- Join a server with at least three players.
- Check the time and wait for the next hour.
- Stay in the game around the expected spawn time.
- Watch for the boss announcement or event instructions.
Tip: If you don’t see the boss, try joining another active server and check again.
The exact map location has not been clearly confirmed in the available public information, so avoid relying on unverified location guides.
How to Prepare Before Fighting the Undead Monarch
Before entering a boss fight, make sure your character is ready. A little preparation can make the battle easier.
Here are some simple tips:
- Check your health: Make sure your character has enough health to survive longer fights.
- Choose your best technique: Equip an innate technique you know how to use.
- Improve your stats: Spend your available points on the stats that support your build.
- Equip useful items: Use suitable weapons and armor from your inventory.
- Understand your attacks: Learn your abilities before entering the fight.
You don’t need to change your entire build just for one boss. Start with equipment and techniques that already work well for you.
How to Defeat the Undead Monarch
Wondering how to fight this boss without losing too much health? Follow these basic combat tips:
- Watch its movements: Don’t rush into attacks. Observe the boss before moving closer.
- Avoid unnecessary damage: Keep moving and dodge when you notice an incoming attack.
- Use your strongest abilities: Attack when you have a good opening instead of wasting every ability immediately.
- Manage your health: Don’t wait until your health is almost empty before playing defensively.
- Stay focused: Avoid getting distracted by other enemies during the fight.
If you are playing with other players, coordinate your attacks and give each other enough room to fight.
What Rewards Can You Get From the Undead Monarch?
This is probably the most interesting part for players.
The Halloween 2026 event introduces exclusive rewards connected to the Undead Monarch encounter, including:
- Special Halloween armor
- Exclusive weapons
- Seasonal rewards and collectibles
The event also features Ghost Bones, which are used in the Halloween event’s Black Market.
The exact drop rates for individual boss rewards are not publicly confirmed, so check the in-game reward information before farming for a particular item.
How to Get Ghost Bones in Jujutsu Infinite
Ghost Bones are an important Halloween event currency. If you want to collect more, focus on defeating Hallowed mobs and bosses.
You can use the collected Ghost Bones at the event Black Market to obtain available seasonal items.
A simple approach is to keep completing event activities, collect the materials you receive, and check the Black Market regularly.
Is the Undead Monarch Event Permanent?
No. The Undead Monarch is part of the limited-time Halloween 2026 event.
The event is scheduled to end on November 13, 2026. So, if you want to participate and collect its seasonal rewards, don’t leave everything until the last day.
Final Thoughts
The Undead Monarch gives Jujutsu Infinite players another reason to explore the game and try something different. Whether you’re interested in boss fights, Halloween equipment, or collecting Ghost Bones, there are several reasons to participate.
Prepare your character, join an active server, and keep an eye on the hourly spawn. Most importantly, enjoy the fight and make the most of the limited-time event!