Jevil is one of the toughest secret bosses in Deltarune Chapter 1, and beating him requires skill, patience, and the right strategy. Whether you’re going for a pacifist run or fighting him head-on, this guide will walk you through everything you need to know to take down this chaotic jester.

Jevil is an optional boss hidden in Card Castle’s prison cell, and he’s no pushover. With unpredictable attacks and high damage output, he can wipe out your party quickly if you’re unprepared. There are two ways to defeat him:
- Violent Route – Reduce his HP to zero.
- Pacifist Route – Tire him out using ACT commands and then Pacify him with Ralsei.
Each method rewards you with different items—the Devilsknife weapon for Susie if you fight, or the Jevilstail armor (usable by anyone) if you pacify him.
Preparing for the Battle
Before facing Jevil, make sure your inventory is stocked with healing items. Here’s what you should bring:
- Darkburgers – Great for healing large amounts of HP.
- Revive Mints – Essential for reviving downed party members.
- Top Cake or Spin Cake – Top Cake heals a lot but is non-renewable; Spin Cake is reusable and becomes stronger in later chapters.
- Club Sandwich – Heals the entire party, useful for group attacks.
- Choco Diamonds & Hearts Donuts – Preferred by Kris and Susie respectively for better healing.
If your inventory is full, consider discarding the Manual to free up space.
Battle Strategies
Pacifist Route (Tiring Jevil Out)
To pacify Jevil, you need to raise his tiredness level to at least 9. The key ACT commands for this are:
- Hypnosis (50 TP) – Increases Jevil’s tiredness by 1 and reduces his damage for that turn.
- Pirouette (20 TP) – Adds 0.5 tiredness and has additional effects based on the turn count (e.g., healing, defense buffs, or debuffs).
Tips for Pacifying Jevil:
- Defend Often – Defending builds TP, which you’ll need for Hypnosis.
- Prioritize Ralsei & Kris – Ralsei is needed to Pacify Jevil, and Kris is required for ACTs. If either goes down, you’ll struggle.
- Use Pirouette Wisely – Some turns provide helpful effects (like healing), while others can backfire (like reducing invincibility frames).
Violent Route (Fighting Jevil)
If you choose to fight, focus on dealing damage while keeping your team alive.
- Susie’s Rude Buster – A high-damage ability that costs TP. Save TP for this.
- Kris’s Attacks – Consistent damage, especially with good weapons.
- Ralsei’s Role – Mostly defend or heal with items to conserve TP.
General Combat Tips:
- Learn Attack Patterns – Jevil’s attacks follow a set order, so memorizing them helps.
- Dodging is Key – Many attacks can be avoided by staying in corners or moving in specific patterns.
- Heal Strategically – Use items instead of Ralsei’s healing spell to save TP.
Dodging Jevil’s Attacks
Jevil’s attacks are fast and chaotic, but each has a trick to avoid them:
- “Catch Me If You Can” (Spade Volleys) – Stay near the top-left corner to minimize hits.
- “Ring Around” (Spiral Spades) – Move counterclockwise behind the bullets.
- “Devilsknife” (Scythe Spin) – Follow a gap along the edge; watch for the red scythe in later phases.
- “Carousel” (Horse-Duck Bullets) – Ride the top-right corner—the bullet heads don’t hurt you.
- “Chaos Bomb” (Final Attack) – Heal up beforehand; this attack is brutal but survivable.
Final Tips
- Practice Makes Perfect – Jevil’s fight is about pattern recognition. Don’t get discouraged if it takes multiple tries.
- Controller vs. Keyboard – Some players find controllers easier for precise movement.
- Watch No-Hit Runs – Seeing how experts dodge attacks can help you improve.
Rewards for Beating Jevil
- Devilsknife (Violent Route) – A powerful weapon for Susie.
- Jevilstail (Pacifist Route) – Versatile armor for any party member.