Jevil
The Jester of Chaos
"CHAOS, CHAOS! CATCH ME IF YOU CAN!"
Jevil is the premier secret boss of DELTARUNE Chapter 1. Locked away in Card Castle for discovering the truth of their world, Jevil bombards the bullet board with swirling card suits, dancing scythes, and carousel horses.
Encounter Victory Rewards
Jevilstail
Jevilstail (Armor for anyone: +2 ATK, +2 DEF, +2 Magic)
Devilsknife
Devilsknife (Weapon for Susie: +5 ATK, +4 Magic, -10% TP cost for Rude Buster)
Phase-by-Phase Attack Pattern Breakdown
Every attack in Jevil's arsenal operates on fixed collision and projectile timings. Follow the dodging strategies below to minimize damage taken and maximize TP grazing.
Opening Gambits (Turns 1–5)
Jevil tests your spatial awareness with suit projectiles and dancing spades.
Spade Spiral
Trajectory: Spades spawn in concentric spirals expanding outward from the center.
Stay near the bottom corners and orbit clockwise in small circular nudges.
Hearts Bombardment
Trajectory: Four large heart bombs burst into 4 smaller hearts each with varying trajectories.
Keep your soul in the upper horizontal lane and slip through gaps right after explosions.
Club Shocker
Trajectory: Clubs fly in from outside the box and burst into three-way spread shots.
Do not hug the walls! Stay centered and make vertical micro-adjustments.
Chaos Carousel (Turns 6–10)
The battlefield expands as giant carousel animals bob up and down across the screen.
Carousel Horses
Trajectory: Columns of horses bob vertically while scrolling horizontally at high speeds.
Focus exclusively on your red soul hitbox. Move up and down in sync with the lowest gap.
Devilsknife Dual Spin
Trajectory: Four giant red Devilsknives orbit the arena and crash toward the center.
Remain calm near the bottom edge. Drift into the open quarter circle as knives rotate.
Final Chaos & Desperation (Turn 11+)
Desperation phase where Jevil fills the arena with giant falling scythes and multi-suit storms.
Final Chaos (Mega Scythe)
Trajectory: Giant translucent scythes crash straight down, accompanied by screen flashes and sparks.
Avoid the dead center. Stay near the bottom 20% mark and slip past the final descending blade.
Suit Storm Roulette
Trajectory: Spades, Clubs, Diamonds and Hearts erupt simultaneously with randomized velocities.
Tap arrow keys gently — do not hold keys down. Small taps prevent sliding into trailing bullets.
Recommended Battle Strategies
Tire & Pacify (Mercy Route - Rewards Jevilstail)
- Hypnosis (Kris + Ralsei)
- Pirouette (Kris alone)
- Heal Prayer (Ralsei)
- Turn 1: Kris and Ralsei cast Hypnosis (requires 32% TP). Susie DEFENDs to generate TP.
- Turn 2: If TP is below 32%, have Kris use Pirouette while Ralsei DEFENDs and Susie attacks or heals.
- Track Pirouette turn count! Turn 2 lowers Jevil DEF, Turn 7 raises ATK, Turn 9 heals party member.
- Once Jevil is TIRED (after ~9 Hypnosis equivalents), Ralsei immediately casts Pacify for the victory.
Rude Buster Assault (FIGHT Route - Rewards Devilsknife)
- Susie Rude Buster
- Kris Attack
- Ralsei Heal Prayer
- Susie is your primary damage carry. Equip Spooky Sword or Brave Ax on Susie.
- Kris and Ralsei DEFEND on turn 1 to gain 32% TP immediately.
- Unleash Susie’s Rude Buster every single turn you reach 40% TP.
- Keep Kris attacking and Ralsei on emergency healing with Dark Burgers or Heal Prayer.
🎒 Recommended Item Loadout & Healing Priority
Do not enter the encounter with empty slots. Stock up on these items before initiating combat:
- ✦ Top Cake (Full party 160 HP heal - save for Phase 3)
- ✦ Revive Mint (Revives downed ally with max HP)
- ✦ Dark Burgers (40 HP heal - buy 6+ from Seam)
- ✦ ChocDiamond / HeartsDonut (Heals Susie/Ralsei for extra)
Most Common Player Mistakes & Traps
Community speedrun analytics show over 75% of wipes on Jevil occur due to the following four errors:
Panic-holding movement keys during the Carousel attack, smashing directly into descending horses.
Forgetting that Ralsei has low HP and gets one-shot if unbuffed. Always equip Amber Card or White Ribbon on Ralsei.
Using Pirouette on Turn 7 (which sharply increases Jevil’s damage output). Defend or Hypnosis instead on Turn 7.
Greeding for TP grazes when on under 30 HP instead of playing safe at the box perimeter.
High-Level Demonstration Video
Watch frame-precise dodging lines and turn rotations in this high-quality community run:
Recommended Practice & Encounter Progression
If you have mastered Jevil, test your reflexes against these correlated boss encounters:
