ONiON
ONiON is a 3★ Mineral Arcanist in Reverse: 1999. Below are the exact Insight materials needed to ascend them, plus other Mineral Arcanists to build alongside.
Data updated: 2026-07-11
ONiON — Review & Analysis
ONiON is a 3★ Mineral character who fills a budget single-target DPS role that doubles as a light damage-soak. Both of her Incantations are single-target Reality DMG hits that add extra damage when the enemy is under [Debuff]/[Abnormal]/[Control] or when the target's HP runs low, rewarding calculated timing. Her Ultimate both AoE-nukes the enemy line and grants the whole team 2 stacks of [Sturdy] for -25% DMG taken, while she Taunts and cuts her own damage taken by 30% afterwards — making her a handy early-game filler.
- Single-target damage spikes when the enemy carries a bad status ([Debuff]/[Abnormal]/[Control]) or is low on HP (Insight Lv.4 loosens the threshold to below 60% HP), pairing naturally with debuff or control teams.
- The Ultimate is multi-purpose: AoE damage plus 2 stacks of [Sturdy] for the whole party and a self Taunt with 30% DMG reduction — a rare team-protection kit on a 3★.
- Mineral Afflatus counters Beast, dealing an extra 30% damage against Beast enemies.
- As a 3★ (tier F), her base stats and damage ceiling are low, and she is easily replaced by higher-rarity units in late-game content.
- Her bonus damage is conditional — it needs the enemy debuffed/controlled or on low HP; without that setup her output is fairly plain, and Mineral is in turn countered by Star (taking 30% more damage).
Level the Ultimate first, since the Insight milestones push its damage from 300% up to 400% and it is the core source of both AoE and the team-wide [Sturdy] shield; then bring up Incantation I to maximize her conditional single-target damage. For Psychubes, favor ATK/damage-boosting options to lean into the DPS role; if you run ONiON as a secondary damage-soak, a survivability-oriented Psychube is also worth considering.
Overview
Base Stats (max level)
| Base Stats (max level) | Lv.1 | Lv.30 | Insight 1 · Lv.40 | Insight 2 · Lv.50 |
|---|---|---|---|---|
| HP | 1,219 | 1,850 | 3,101 | 4,625 |
| ATK | 236 | 358 | 600 | 894 |
| Reality DEF | 99 | 150 | 252 | 376 |
| Mental DEF | 83 | 127 | 212 | 316 |
| Crit Rate | 7.1% | 7.1% | 8% | 9% |
| Crit DMG | 140.7% | 140.7% | 142% | 143.5% |
ONiON — Skills & Incantations
Incantation I — Not Fiction
Incantation “Insight II: 1-target attack. Deals 450% Reality DMG. If the target is in 【Stats Down】, 【Neg Status】, or 【Control】 statuses, this attack deals an additional 100% Reality DMG.”
Incantation II — Just a Performance
Incantation “Insight II: 1-target attack. Deals 400% Reality DMG. If the target's current HP is below 50%, then deals 150% more Reality DMG.”
The Final Ritual — Strange Phenomena Occur From Time to Time
Ultimate “Insight II: Mass attack. Deals 350% Reality DMG to all enemies; Gives all allies 2 stacks of 【Sturdiness】.”
Insight Legacy — The Sober One
Incantation “Insight II: DMG Heal +10% when entering battle.”
Skill Quotes
“Eyes dazzled, ears tingling.”
“Eyes dazzled, ears tingling, head dizzy.”
“Eyes dazzled, ears tingling, head dizzy. The price for understanding the truth is quite high.”
“Limbs rigid.”
“Limbs rigid, eyes blinded.”
“Limbs rigid, eyes blinded. Her performance can only replay 1/10 of the reality.”
“The good news is, this is just her show; the bad news is, this is not just her show.”
Insight Materials
Insight 1
Insight 2
Resonance Materials
All 9 Resonance levels
Recommended Psychubes
Teams with ONiON
Vila, Avgust and ONiON all tap into Heal together with Sturdy — combining it across three kits at once outperforms any single carry doing it alone. Barbara keeps the line-up alive with Heal so that payoff has time to land.
Teams →
