How To Become a Demon in Slayerbound (March 2026) Ultimate Guide

Updated by Sunny Kaushik
February 14, 2026
Gaming

Slayerbound, the popular Roblox RPG inspired by the Demon Slayer anime, offers players a choice between protecting humanity or hunting it. While starting as a Slayer is the default path, many players crave the raw power and unique skills of the Demon race. Becoming a Demon in Slayerbound is not as simple as clicking a button; it requires finding a specific NPC, surviving a transformation trial, and understanding the fundamental shift in gameplay mechanics.

In this comprehensive guide, I will walk you through the exact steps to locate Muzan Kibutsuji, the requirements for the transformation, and what to expect once you cross over to the dark side. I have compiled data from the top community guides and verified the latest 2026 game mechanics to ensure you don’t fail the transformation.

Quick Summary: Becoming a Demon

Step	Action	Key Detail
1. Prerequisites	Reach required Level	Check current level cap requirements (usually Level 10+).
2. Location	Find Muzan Kibutsuji	Hides in specific caves or cities (Night only).
3. Interaction	Talk to Muzan	Request to become a Demon.
4. The Trial	Survive the Injection	High damage tick; heal through it or die.
5. Result	Race Change	Lose Breathing Style; gain Blood Demon Art.

How To Become a Demon in Slayerbound: Step-by-Step Process

Transitioning from a human to a Demon is a pivotal moment in your Slayerbound journey. It is a one-way street (unless you use a code or pay for a reset), so you must be certain of your decision. Below is the detailed, foolproof method to achieve this transformation.

Prerequisites Before You Start

Before you go hunting for the King of Demons, you need to ensure your character is actually ready for the encounter. Trying to find Muzan too early can be a waste of time if you are instantly killed by the transformation process.

Level Requirement: While the level cap changes with updates, generally, you should be at least Level 10 to 15 before attempting this. This ensures you have enough health points (HP) to survive the transformation process, which deals significant damage.
No Final Selection Commitment: In some versions of the game, if you have entered the “Final Selection” exam, you may be locked into the Slayer path until you finish or fail it. It is best to become a Demon before joining the Demon Slayer Corps.
Empty Skill Tree: You will lose access to your Breathing Style. While you usually keep your stats (Breathing/Breath Style stats might convert or become useless), it is better not to waste Skill Points on a Breathing style you plan to abandon.

Finding Muzan Kibutsuji

Muzan is the primary antagonist and the source of all Demons. He does not stand out in the open; he hides, moving between locations or spawning only at specific times.

Nighttime Spawn: Muzan typically only spawns or appears during the Night cycle in the game. If it is daytime in the server, you will need to wait or use an item to skip time if available.
Possible Locations: Muzan has several spawn points, and the developers often rotate them during updates. Based on the current meta and community findings, check these areas:
- Zapiwara Mountains/Cave: Look for a hidden cave entrance, often guarded by low-level demons or simply tucked away in the mountain terrain.
- City Streets (Ogimoto House): sometimes he disguises himself as an NPC in the city.
- Open World Wandering: Occasionally, he spawns as a stationary NPC in a clearing.
Server Hopping: Since his spawn can be rare or camped by other players, “server hopping” (leaving and rejoining a new server) is a common strategy to find him quickly.

The Transformation Ritual

Once you locate Muzan, the interaction is straightforward, but the risk is high.

Interact with Muzan: Approach him and press the interaction key.
Select the Dialogue: Choose the option that asks for his blood or asks to become a Demon. He will offer you a deal.
The Injection/Blood: Upon acceptance, Muzan will inject you with his blood.
Survive the Damage: This is the “make or break” moment. The injection deals rapid, high damage.
- Tip: If you have healing items (Rice Balls, Medicine), use them immediately or have them equipped.
- Tip: If your HP is too low, you will die. If you die here, you do not become a Demon; you simply respawn.
Success: If your HP bar survives the depletion, your screen will flash, and your character model will change. Congratulations, you are now a Demon.

What Changes When You Become a Demon?

Becoming a Demon isn’t just a skin change; it completely alters your progression path. You are effectively playing a different game than the Slayers.

1. Loss of Breathing Style

Immediately upon transformation, you lose access to any Breathing Style you learned (e.g., Water Breathing, Thunder Breathing). You can no longer use Breathing Training NPCs, and your “Breath” stat bar is replaced or rendered obsolete. If you spent hours training your lung capacity, that progress is essentially reset in terms of mechanics.

2. Gaining Blood Demon Arts (BDA)

This is the primary advantage. Instead of Breathing Styles, Demons unlock Blood Demon Arts.

Unlocking BDA: You usually gain access to your first Art automatically or through a specific Demon Trainer NPC.
Variety: BDAs are often flashier and have different cooldown mechanics compared to Breathing styles. Examples include “Flesh manipulation,” “String Arts,” or “Temari Balls.”
Rerolling: If you don’t like the Art you are assigned, you typically have to use “Spins” or pay Robux to reroll for a different one.

3. Sun Weakness

The most significant drawback for Demons is the inability to survive in sunlight.

Daylight Damage: If you step outside during the in-game day, your health will rapidly deplete until you die.
Shelter: You must seek shelter in caves, houses, or use a Sun Resistance equipment item (if available in the current patch) to survive the day. This makes AFK grinding dangerous for Demons.
Note: The “Sun Resistance” niche is highly sought after by high-level Demon players.

4. Diet and Healing

Demons do not eat food like humans.

Regeneration: Demons often have passive health regeneration that is superior to Slayers.
Consumables: Instead of bread or soup, Demons consume “Humans” or specific blood items to restore hunger and HP. This changes the economy of consumables you need to carry.

Demon Progression Guide

Now that you are a Demon, how do you grow strong enough to rival the Hashiras?

Leveling as a Demon

You cannot use the standard Slayer training quest givers (like the Rock smashing or Bamboo cutting missions).

Demon Quest Giver: Look for a specific NPC (often Tamayo or a generic Demon Leader) in the Demon Hideout/Cave.
Kill Slayers: You will often be tasked with hunting NPC Slayers or players.
Dungeons: Some dungeons are exclusive to Demons or have different objectives for them.

Stats Priority

Your stat distribution should change.

Fist/Claw: Increases basic attack damage.
BDA Mastery: Lowers the cooldown or increases damage of your Demon Art.
Durability: Essential for surviving the day and critical hits from Nichirin swords.

Demon vs. Slayer: Which is Better?

This is the ultimate question for new players. Should you stay a Slayer or become a Demon?

Feature	Slayer	Demon
Combat Style	Sword Breathing Forms	Blood Demon Arts (Magic-like)
Exploration	Free movement day and night.	Restricted to night/caves (unless specific gear).
Progression	Final Selection, Corps Missions.	Muzan Quests, Eating humans.
PvP	Focus on Breathing Tech (M1 combos).	Focus on ranged/disruptive Arts.
Difficulty	Moderate (Standard RPG).	High (Sun restriction, hunted by Slayers).

Verdict: If you like freedom of movement and traditional sword fighting, stay a Slayer. If you want unique abilities, faster regeneration, and a “hard mode” survival challenge, become a Demon.

Common Mistakes to Avoid

I have seen many players ruin their runs by making these simple errors during the transformation process.

Transforming with Low HP: Do not talk to Muzan if you just finished a fight and have 10% HP. The blood injection will kill you instantly. Heal to full health first!
Forgetting to Remove Gear: In some updates, your Slayer Corps uniform or Nichirin Sword might be deleted or rendered useless. It is often better to store valuable gear in your inventory slots if the game allows trading/storage before you switch.
Stepping into the Sun: The moment you become a Demon, check the in-game clock. If it is 6:00 AM, you have seconds to find shade. Many new Demons die immediately after transformation because they are standing in an open field.
Ignoring the Map: Demons need to learn the location of “Safe Zones” or caves much more intimately than Slayers. Memorize the map to avoid being caught in the sunrise.

Pro Strategies for Demon Players

Once you have mastered the basics, use these strategies to dominate the server.

Camp Spawn Points: As a Demon, you are stronger at night. Use this time to hunt Slayers who are grinding quests.
Blood Art Synergy: Some Blood Arts are better for PvE (grinding mobs) while others are for PvP (player kills). If you get a PvE art, use it to farm levels fast so you can reroll later.
Utilize the “Run” Tactic: If you see a group of Slayers, run into a cave. Slayers often have a disadvantage in tight corridors where Demon regeneration can outpace their damage output.

Frequently Asked Questions

Can I change back to a human from a Demon?

Currently, in most versions of Slayerbound, you cannot change back to a human without resetting your character (wiping data) or using a “Race Reset” code/item if the developers have released one. Always check the latest codes for free resets.

Where does Muzan spawn in Slayerbound?

Muzan typically spawns at night. He is most commonly found in the Zapiwara Mountain cave or disguised among the NPCs in the starting city. If you cannot find him, try server hopping.

Do I lose my level if I become a Demon?

No, you retain your Level and basic Stats (Health, Stamina, etc.). However, your progression in “Breathing” and “Lung Capacity” is usually lost or converted, meaning you have to re-grind your Demon Art proficiency.

Is becoming a Demon permanent?

It is permanent for that character slot unless you use a Wipe Potion or a Race Reset item. It is a significant commitment, so ensure you want to play the Demon playstyle before talking to Muzan.

What is the best Blood Demon Art?

The “best” art changes with balance patches. Generally, arts that offer high mobility or crowd control (like String Art or Arrow Art) are top-tier for PvP, while large AoE arts are best for grinding levels.

Can Demons use swords?

Typically, Demons do not use Nichirin Swords. Their “weapon” is their body (fists/claws) enhanced by their Blood Demon Art. Some specific arts might summon weapons, but you generally do not equip a Katana as a Demon.

Conclusion

Becoming a Demon in Slayerbound offers a thrilling, albeit challenging, alternative to the traditional Slayer path. It requires careful preparation, the ability to find Muzan, and the survivability to withstand his blood. By following this guide, you ensure that your transition to the dark side is seamless, allowing you to immediately start mastering your Blood Demon Arts and hunting Slayers under the cover of night. Remember to bookmark this page and our Slayerbound Codes guide to stay ahead of the meta in March 2026