Boilgus
Chromatic formA quick glance at the venting steam reveals its current mood. Curiously, experiencing different emotions burns through varying quantities of ore. "Silent and steadfast as a mountain, it keeps its eternal watch. Yet, boundless vitality surges from within."
Boilgus is a 
Mech and 
Fire-class Jini in Roco Kingdom, number 334 in the World Codex. It lives in Petiapolis. Every form in the line has a Chromatic form.
How to get Boilgus
Where Boilgus lives
The Codex lists Boilgus in these places:
The Codex says it is "Highly elusive".
Evolve Boilgar
Bessel hatches from the Bessel Egg or the Event Jini Egg. Bessel evolves into Boilgar at level 28. Boilgar evolves into Boilgus at level 38.
Attract Boilgus at an Owlstone Nest
"Place this item in the Owlstone Nest to attract certain Jinies. Its patterns reveal the Jinies it attracts."
How to get: By completing Season Research Topic Challenges
Boilgus evolution
Bessel evolves into Boilgar at level 28. Boilgar evolves into Boilgus at level 38.
Best Boilgus Build: Personality, Skills and BloodlineBoilgus Best Build
From recently active players, as the game shows them · fetched 14 Nov 2026
PvPTop Personality
- 1
Quiet45.67 % - 2
Smart6.58 % - 3
Grounded5.34 % - 4Calm4.11 %
- 5
Vigilant4.11 % - 6Passionate4.11 %
Top Ind. Apt.
- 1
M. ATK82.30 % - 2
HP73.25 % - 3
P. DEF67.07 % - 4
M. DEF31.27 % - 5
P. ATK18.93 % - 6
SPD18.51 %
Top Bloodline
- 1
Fire34.15 % - 2
Mech29.21 % - 3
Corrupted12.75 % - 4
Exotic11.11 % - 5
Shadow6.99 % - 6
Electro2.46 %
Top Skills
- 1
Ion Oscillation42.79 % - 2
Burn Down39.91 % - 3
Energy Conservation37.86 % - 4
Magnetic Storm36.62 % - 5
Kindling27.16 % - 6
Inferno Storm24.69 %
Boilgus Chromatic form
Every Jini in the Bessel line has a Chromatic form in different colours.
Boilgus Prismatic coloursPrismatic colours
A Prismatic Boilgus has one of 39 colour pairs and one of 4 glitters, every one as likely, or the rare hidden Black & White. Pick a glitter to see every colour with it.
Boilgus stats
Boilgus's highest stat is M. DEF at 163 and its lowest is SPD at 55. Its six stats add up to 641.
HP132P. ATK76M. ATK130
P. DEF85M. DEF163SPD55
Fire-class Skill Boost25%
Mech-class Skill Boost25%Boilgus personalities
Each Boilgus has one of 30 personalities. A personality raises one stat by 10% and lowers another by 10%, and the raised stat grows by 2% with each growth order.
+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%+10%−10%45.67% of recent playersBoilgus trait
TraitGreedy Algorithm
The Slot 1 skill gains GearshiftGearshiftAt turn start, skills with Gearshift X move down X slots in the queue. This effect stacks. 1 and applies 6 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) to the enemy.
Boilgus skills
Learned by leveling up
Boilgus learns 13 skills as it levels up, from Ion Oscillation at level 1 to Burn Down at level 50.
3Ion Oscillation
90AttackDeals Magic Damage. If this skill is in slot 3, Power +40. GearshiftGearshiftAt turn start, skills with Gearshift X move down X slots in the queue. This effect stacks. 1.
0Lever Swap
—StatusRestores 2 Energy and swaps the skills in adjacent slots.
If you want something, you have to pay a price. Know the cost before you act.
2Energy Conservation
—DefenseReduces damage taken by 80%. Counter: AttackCounter: AttackIf the enemy uses an attack skill, this skill counters successfully: This Jini gains priority and triggers a counter effect. After use, all the equipped defense skills enter a 1-turn cooldown. - Adjacent skills' Energy Cost permanently -1.
The Order doesn't care. It only wants its pawns to keep each other in check.
2Magnetic Storm
70AttackDeals Magic Damage. If this skill is in slot 1 or 3, Power +30. GearshiftGearshiftAt turn start, skills with Gearshift X move down X slots in the queue. This effect stacks. 1.
2Ignite
—StatusInflicts 10 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) on the enemy.
3Kindling
30AttackDeals Magic Damage in a 2-hit combo. Each hit inflicts 2 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) on the enemy.
Recognize these? They're the terrifying stuff that sends wild beasts running for their lives.
3Searing Mark
—StatusDispels all marksMarkMarks persist through Jini swaps, and their effects are transferred to the incoming Jini. A Jini can hold up to 1 positive and 1 negative Mark at a time. from both sides. For each stack dispelled, inflicts 5 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) on the enemy.
1Defense
—DefenseReduces damage taken by 70%. Counter: AttackCounter: AttackIf the enemy uses an attack skill, this skill counters successfully: This Jini gains priority and triggers a counter effect. After use, all the equipped defense skills enter a 1-turn cooldown..
3Cascade
70AttackDeals Magic Damage. If this attack is not countered by a defense skill, dispels all MarksMarkMarks persist through Jini swaps, and their effects are transferred to the incoming Jini. A Jini can hold up to 1 positive and 1 negative Mark at a time. from both sides.
0Sync Drive
—StatusAfter use, Power of adjacent skills permanently +20. Counter: DefenseCounter: DefenseIf the enemy uses a defense skill, this skill successfully counters: it gains priority and triggers a counter effect. - Power permanently +30 instead.
4Inferno Storm
75AttackDeals Magic Damage and inflicts 6 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) on the enemy.
3Skyfire
—StatusInflicts 10 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) on the enemy. Counter: DefenseCounter: DefenseIf the enemy uses a defense skill, this skill successfully counters: it gains priority and triggers a counter effect. - Inflicts 30 stacks instead.
4Burn Down
155AttackDeals Magic Damage. For every 5% of the enemy's Health lost, this skill's Power -5.
"It's all over. Our enemies are burnt out, and so are we."
Learned via skill tablet
Boilgus can also learn these 15 skills from Skill Tablets. Open a skill to see how to get its tablet.
Bearing Support
—StatusActive: Energy Cost of this skill's passive effect permanently -1. Passive: Adjacent skills' Energy Cost -1. GearshiftGearshiftAt turn start, skills with Gearshift X move down X slots in the queue. This effect stacks. 1.
Warm Up
—StatusDoubles the Skill Power of the next attack. Counter: DefenseCounter: DefenseIf the enemy uses a defense skill, this skill successfully counters: it gains priority and triggers a counter effect. - Increases the Power by 4× instead.
Quad Degradation
100AttackDeals Magic Damage. For each stack of markMarkMarks persist through Jini swaps, and their effects are transferred to the incoming Jini. A Jini can hold up to 1 positive and 1 negative Mark at a time. on the enemy, this skill's Energy Cost -1.
Stellar Fission
—StatusInflicts 2 stacks of Starfall MarkStarfall MarkMark effect: Hitting the marked Jini with a non-Stellar-class skill triggers Starfall Mark. This consumes all Starfall stacks to deal bonus Stellar-class damage. on the enemy.
Antinomy
—StatusInflicts 3 stacks of Starfall MarkStarfall MarkMark effect: Hitting the marked Jini with a non-Stellar-class skill triggers Starfall Mark. This consumes all Starfall stacks to deal bonus Stellar-class damage. on the enemy. Counter: DefenseCounter: DefenseIf the enemy uses a defense skill, this skill successfully counters: it gains priority and triggers a counter effect. - Doubles the enemy's Starfall MarkStarfall MarkMark effect: Hitting the marked Jini with a non-Stellar-class skill triggers Starfall Mark. This consumes all Starfall stacks to deal bonus Stellar-class damage. stacks.
Flame Shield
—DefenseReduces damage taken by 70%. Counter: AttackCounter: AttackIf the enemy uses an attack skill, this skill counters successfully: This Jini gains priority and triggers a counter effect. After use, all the equipped defense skills enter a 1-turn cooldown. - Inflicts 6 stacks of BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) on the enemy.
Sunbask
—StatusDispels all buffsBuffEffects that increase attributes, Skill Power, or Combo Count, reduce Energy Cost, or grant effects including Lifesteal, and Overload. (Excludes Mark, Trait, and Other effect types.) from the enemy.
Fearless Heart
—DefenseReduces damage taken by 100%. Counter: AttackCounter: AttackIf the enemy uses an attack skill, this skill counters successfully: This Jini gains priority and triggers a counter effect. After use, all the equipped defense skills enter a 1-turn cooldown. - Converts prevented damage into healing; this skill's Energy Cost permanently +2.
Complete Combustion
—StatusDoubles the enemy's BurnBurnDeals Fire-class damage equal to 2% of Health at the end of the turn and reduces stacks by 50%. (Fire-class Jinies are immune to this effect.) stacks and triggers Burn damage once.
Gear Transfer
—StatusSpeed +30. If this skill is in slot 1 or 3, Physical Attack additionally +80%. GearshiftGearshiftAt turn start, skills with Gearshift X move down X slots in the queue. This effect stacks. 1.
Psychic
—StatusTransforms into a random skill from an enemy Jini each turn, and this skill's Energy Cost -2.
Preemptive Guard
—DefenseReduces damage taken by 50%. Counter: AttackCounter: AttackIf the enemy uses an attack skill, this skill counters successfully: This Jini gains priority and triggers a counter effect. After use, all the equipped defense skills enter a 1-turn cooldown. - PriorityPrioritySkills with higher priority act first, bypassing any Speed differences between Jinies. Priority can be stacked. +1 on the next action.
Bloodline Skill
A Bloodline Elixir gives Boilgus one of 18 bloodlines, and from level 15 each bloodline teaches it its own skill. Boilgus holds one bloodline at a time.
100
Earth
Mud Armor
—Status
Physical Attack and Physical Defense +60%. Counter: DefenseCounter: DefenseIf the enemy uses a defense skill, this skill successfully counters: it gains priority and triggers a counter effect. - Additionally doubles buffsBuffEffects that increase attributes, Skill Power, or Combo Count, reduce Energy Cost, or grant effects including Lifesteal, and Overload. (Excludes Mark, Trait, and Other effect types.).
Ice
Rime
—Status
Inflicts 4 stacks of FreezeFreezeFreezes 5% of Health; if current Health is lower than the Freeze ratio, the Jini becomes Exhausted. (Ice-class Jinies are immune.) on the enemy.
Dragon
Draconic Roar
200Attack
ChargesChargeCharges for 1 turn before casting on the next. While charging, the Jini can not be forced to leave the field., then deals Magic Damage to the enemy.
Electro
Paralyze
—Status
Enemy PriorityPrioritySkills with higher priority act first, bypassing any Speed differences between Jinies. Priority can be stacked. -1. Counter: DefenseCounter: DefenseIf the enemy uses a defense skill, this skill successfully counters: it gains priority and triggers a counter effect. - Enemy Physical & Magic Attack additionally -70%.
Poison
Poison Spore
—Status
Inflicts 5 stacks of PoisonPoisonDeals Poison-class damage equal to 3% of Health at the end of the turn. (Poison-class Jinies are immune to this effect.) on the enemy.
Bug
Feign Sleep
—Status
Restores 2 Energy. Grants allied lineup 1 stack of OfferingOfferingGrants Offering buffs to the Bite and Swarm skills in the lineup.: Energy Cost -2.
Wing
Plume Rush
—Status
Power of all skills +20. Grants AgilityAgilityWhen a Jini is switched in, it casts the first skill with the Agility effect that it has enough Energy to use..
Charm
Sweet Sustain
—Status
CuteifyCuteifyDevolves to the previous stage on its evolution line with Species Aptitude lowered accordingly. (Only Jinies capable of devolution can gain Cuteify. This effect persists even after they leave the battlefield.) itself and the enemy: Restores 40% Health.
100
Havoc
Greed
—Status
Grants 100% LifestealLifestealWhen dealing damage, restores Health proportional to the damage dealt and Lifesteal ratio..
Stellar
Hyper Projection—Status
Inflicts 4 stacks of Starfall MarkStarfall MarkMark effect: Hitting the marked Jini with a non-Stellar-class skill triggers Starfall Mark. This consumes all Starfall stacks to deal bonus Stellar-class damage. on the enemy.
Boilgus class matchup
As a Mech and Fire-class Jini, Boilgus takes increased damage from 
Water, Fire, 
Earth and 
Fighting skills and reduced damage from 
Flora, 
Ice, 
Bug, 
Charm, Mech, 
Common, 
Dragon, 
Poison, 
Wing and 
Stellar skills.
Increased damage from these skills
WaterFireEarth
FightingReduced damage from these skills
FloraIceBugCharmMechCommonDragonPoisonWingStellarBoilgus research topics
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