Some players finish Deltarune Chapter 1 believing they saw everything, then a jester-shaped gremlin laughs at them from behind a ???? labeled elevator. That gremlin is Jevil, a secret boss who turns the first chapter into a bullet-hell circus. As of 2026, Chapters 3 and 4 are available, so it is a fine time to replay Chapter 1 and finally settle the score with this maniac.

How to actually find the jester

Finding Jevil is not as simple as wandering into the throne room. After clearing the Castle Dungeon, walk past the shop and take the elevator to the first floor. Head down and to the right to find another elevator with the floor listed as ????. Only Deltarune would use question marks as a floor number. Ride it downstairs, follow the path, and a locked gate appears. Interacting with the gate while it is locked makes Jevil speak to the party, telling Kris and friends that a single key is needed. Unfortunately, that key has been broken into three pieces, because one key would be too kind.

The broken key scavenger hunt

Players expecting a tidy side quest receive a three-piece mess. Each fragment demands poking around the Castle, talking to NPCs, and revisiting corners that seemed harmless. The hunt is not difficult, but it does punish anyone who sprinted past every optional room. Once all three pieces are collected, the next stop is the Bake Sale. Take the path north to find Smith Malius, who notices the broken key pieces in the inventory and offers to repair them. A blacksmith in a bake sale? Sure. That is exactly the kind of logic this world runs on.

Before starting the fight, players should stock up on healing items from the shop. Jevil does not care about a party's preparation level.

Jevil's attack patterns, or why is this jester screaming?

As with most Undertale and Deltarune fights, players can choose a passive or violent approach. Either way, Jevil is the hardest fight in Chapter 1, so learning his moveset matters. Most attacks have text cues, which makes dodging slightly less unfair.

Cue / voice line	Attack behavior	Dodging advice
Chaos, chaos!	Explosive spades and clubs ricochet across the combat box.	Stay mobile and slip through the gaps rather than hugging a corner.
I can do anything!	A giant scythe sweeps through the arena.	Move to the side it has already passed.
Let's play a game!	Rotating clubs, hearts, or carousel blades fill the box.	Treat it like a rhythm game and move in small circles.
Desperation phase	The combat box disappears as knives rain from the top of the screen.	Use the extra space outside the normal play area to weave freely.

The attacks start in a specific order, but the longer Jevil spends in a phase, the more random the patterns become. When desperation mode begins, all attacks can appear at once at different speeds. The vanishing combat box is not a bug. It is the game's way of saying the end is near.

Beating Jevil: rewards worth the chaos

Depending on how the battle is resolved, the reward changes.

Approach	Reward	Notes
Pacify / spare	Jevilstail	Defensive armor that can carry into Chapter 2 and beyond.
Fight / defeat	Devilsknife	A powerful weapon, especially for Susie in the early chapters.
Either	Shadow Crystal	A rare item tied to the secret bosses of each chapter.

The Jevilstail may look small, but for some characters it remains the best equipment through the first couple of chapters. The Shadow Crystal is even stranger: it appears only on secret bosses like Spamton NEO in Chapter 2 and Gerson in Chapter 4. Bringing it to Seam triggers a cryptic comment about powerful beings and a shadow that remains visible even when the crystal does not.

Should players revisit Chapter 1?

Absolutely. The fight can be attempted at any point after reaching the Castle, so there is no need to finish the entire chapter first. With Chapters 3 and 4 now available, jumping back into Chapter 1 is a good way to clean up missed content. Deltarune is also available on most modern consoles, so curious players can try different runs without juggling multiple accounts. Just be warned: choosing the violent route may leave a mark on the ending. Until the next chapter arrives, Jevil is still waiting behind that question-mark elevator, laughing at every player who has not yet beaten him.