The Fool
3★

The Fool

Star 3★ Arcanist
About The Fool

The Fool is a 3★ Star Arcanist in Reverse: 1999. Below are the exact Insight materials needed to ascend them, plus other Star Arcanists to build alongside.

Data updated: 2026-07-11

The Fool — Review & Analysis

The Fool

The Fool is a 3★ Star-afflatus unit built around tanking and disruption rather than raw damage. His core skill, The Fool, self-applies [Taunt] to soak hits then counters by inflicting [Corrosion], draining the attacker for a percentage of HP each round; The Sage deals single-target Mental DMG while cutting the enemy's Passion, slowing their ultimate charge. His ultimate hits all enemies with Mental DMG and extends Corrosion, making him a serviceable early-game tank/disruptor rather than a main DPS.

Strengths
  • The Fool pairs self-[Taunt] with a counter that inflicts [Corrosion], draining attackers by a percentage of HP — it shields the team while chipping down whoever hits him.
  • The Sage lowers the target's Passion, slowing enemy ultimate charge — genuine control value.
  • His passives grant DMG-taken reduction, +25% Crit RES and +10% Reality/Mental DEF on entry, giving true tank durability; as a Star unit he also counters Mineral (+30% DMG).
Weaknesses
  • As a 3★ ranked D, his base stats and power ceiling are low — easily replaced by rarer units once your roster matures.
  • His Corrosion damage relies on being attacked (a Counter) and is capped by the user's HP, so it is fairly passive; as a Star unit he is also countered by Plant.
Build Priority

Level The Fool (Incantation II) first to push Corrosion potency and the durability of his Taunt-Counter loop — that is his core value; then The Final Rite for AoE pressure and Corrosion extension. Since Corrosion scales on % HP and he leans tank, favor a survival Psychube (HP/DEF) to keep him standing and soaking hits; if you want more out of his Mental strikes, an ATK-leaning Psychube is an option, but his main role stays durability and disruption.

Overview

Rarity
3★
Afflatus
Star
Birthday
September 4
Official Names
JA: ジェスターKO: 광대ZH-TW: 弄臣
Afflatus Matchups
↑ Strong against
Mineral
↓ Weak to
Plant

Base Stats (max level)

Stats at Insight III, max level — from datamined values.
HP5,540
ATK750
Reality DEF424
Mental DEF474
Crit Rate6.4%
Crit DMG139.6%
Stats across Insight milestones
Base Stats (max level) Lv.1Lv.30Insight 1 · Lv.40Insight 2 · Lv.50
HP 1,4602,2163,7155,540
ATK 198301503750
Reality DEF 112169284424
Mental DEF 125190318474
Crit Rate 5%5%5.7%6.4%
Crit DMG 137.6%137.6%138.6%139.6%

The Fool — Skills & Incantations

Full skill kit with values per upgrade tier.
Incantation I — The Sage Incantation

“Insight II: 1-target attack. Deals 400% Mental DMG. Inflicts Moxie -2 on the target hit.”

Insight 0: 1-target attack. Deals 200% Mental DMG.
Insight I: 1-target attack. Deals 250% Mental DMG. Inflicts Moxie -1 on the target hit.
Insight II: 1-target attack. Deals 400% Mental DMG. Inflicts Moxie -2 on the target hit.
Incantation II — The Fool Incantation

“Insight II: Self counter. Enters 【Taunt】 for 1 round. When the caster is attacked, the attacker suffers 2 rounds of 【Corrode】: when a round ends, takes (Target's Current HP ×35%) Genesis DMG, capped at 35% of Caster's Max HP.”

Insight 0: Self counter. Enters Taunt for 1 round. When the caster is attacked, the attacker suffers 2 rounds of Corrode: when a round ends, takes (Target's Current HP ×15%) Genesis DMG, capped at 15% of Caster's Max HP.
Insight I: Self counter. Enters Taunt for 1 round. When the caster is attacked, the attacker suffers 2 rounds of Corrode: when a round ends, takes (Target's Current HP ×25%) Genesis DMG, capped at 25% of Caster's Max HP.
Insight II: Self counter. Enters Taunt for 1 round. When the caster is attacked, the attacker suffers 2 rounds of Corrode: when a round ends, takes (Target's Current HP ×35%) Genesis DMG, capped at 35% of Caster's Max HP.
The Final Rite — Unscripted Improvisation Ultimate

“Insight II: Mass attack. Deals 310% Mental DMG to all enemies. If the target hit is in the 【Corrode】 status, extends the status duration by 1 round.”

Insight 0: Mass attack. Deals 250% Mental DMG to all enemies. If the target hit is in the Corrode status, extends the status duration by 1 round.
Insight I: Mass attack. Deals 280% Mental DMG to all enemies. If the target hit is in the Corrode status, extends the status duration by 1 round.
Insight II: Mass attack. Deals 310% Mental DMG to all enemies. If the target hit is in the Corrode status, extends the status duration by 1 round.
Insight Legacy — Before the Curtain Falls Incantation

“Insight II: Reality DEF and Mental DEF +10% when entering battle.”

Insight I: When entering battle, enters Fool in the Play status for 2 rounds (only triggers 1 time).
Insight II: Reality DEF and Mental DEF +10% when entering battle.

Skill Quotes

Official flavor quotes tied to each of The Fool's skill ranks, sourced directly from the game.

“He wears many faces.”

— The Sage

“He wears many faces. He can be a messenger, or a deserter.”

— The Sage

“He wears many faces. Perhaps he's just an actor.”

— The Sage

“He controls your emotions.”

— The Fool

“He is the Fool on the stage and he controls your emotions.”

— The Fool

“He is the Fool on the stage and he controls your emotions. And there's more than one of them.”

— The Fool

“He hates it when people barge on to the stage.”

— Unexpected and Improvised

Insight Materials

Exact materials to raise this Arcanist's Insight level.
Insight 1
Sharpodonty × 5,000
Page of Starlit Ascent · +38 other characters also need this × 2
Shattered Bones · +68 other characters also need this × 2
Insight 2
Sharpodonty × 20,000
Scroll of Starlit Ascent · +38 other characters also need this × 4
Rough Silver Ingot · +85 other characters also need this × 2
Salted Mandrake · +66 other characters also need this × 2

Resonance Materials

Materials to build out the Resonance tuning grid.
All 9 Resonance levels
Resonance 2
Moment of Dissonance · +128 other characters also need this × 2
Resonance 3
Moment of Dissonance · +128 other characters also need this × 2
Trembling Tooth · +59 other characters also need this × 2
Resonance 4
Moment of Dissonance · +128 other characters also need this × 2
Silver Ore · +66 other characters also need this × 2
Solidus · +128 other characters also need this × 1
Resonance 5
Brief Cacophony · +128 other characters also need this × 2
Milled Magnesia · +70 other characters also need this × 1
Esoteric Bones · +92 other characters also need this × 2
Resonance 6
Sharpodonty × 10,000
Brief Cacophony · +128 other characters also need this × 2
Clawed Pendulum · +84 other characters also need this × 1
Resonance 7
Brief Cacophony · +128 other characters also need this × 3
Biting Box · +126 other characters also need this × 2
Resonance 8
Brief Cacophony · +128 other characters also need this × 3
Salted Mandrake · +66 other characters also need this × 2
Rough Silver Ingot · +85 other characters also need this × 2
Resonance 9
Brief Cacophony · +128 other characters also need this × 4
Bifurcated Skeleton · +117 other characters also need this × 3
Milled Magnesia · +70 other characters also need this × 4
Resonance 10
Hoarse Echo · +27 other characters also need this × 1
Sonorous Knell · +128 other characters also need this × 2
Holy Silver · +121 other characters also need this × 4
Biting Box · +126 other characters also need this × 4

Recommended Psychubes

Psychubes recommended to equip on The Fool, based on community builds.

Teams with The Fool

Riposte Counter Corps · Riposte

X, aliEn T and The Fool all tap into Riposte — combining it across three kits at once outperforms any single carry doing it alone. John Titor keeps the line-up alive with Shield so that payoff has time to land.

Teams →

Where to next

More Star Arcanists

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