Rumboy
ElectroStumbling upon them in the wild, one always hears snatches of humming. No one can quite make out the tune, yet it is strangely catchy. In truth, they communicate with one another through sounds and melodies, with each bit of humming hiding a message meant for their companions.
Rumboy is a 
Electro-class Jini in Roco Kingdom, number 388 in the World Codex. It lives in Windrest Mountain and Windhold Cliffs. It evolves into Rumbolt at level 40.
How to get Rumboy
Where Rumboy lives
The Codex lists Rumboy in these places:
The Codex says it is "Common in plains and mountains".
Evolve into Rumbolt
Rumboy evolves into Rumbolt at level 40, so getting Rumboy gets you the whole line.
Rumboy evolution
Rumbi evolves into Rumboy at level 22. Rumboy evolves into Rumbolt at level 40.
Rumboy Prismatic coloursPrismatic colours
A Prismatic Rumboy 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.
Rumboy stats
Rumboy's highest stat is SPD at 96 and its lowest is HP at 72. Its six stats add up to 508.
HP72
P. ATK88
M. ATK88
P. DEF90
M. DEF74
SPD96
Electro-class Skill Boost25%Rumboy personalities
Each Rumboy 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%Rumboy trait
TraitElectronic Music
Using any Electro-class skills during ThunderstormThunderstormDuring Thunderstorm, both sides gain 1 stack of Conduction at the end of each turn. (Electro-class Jinies are immune to this effect.) inflicts Conduction on the enemy.
Rumboy skills
Learned by leveling up
Rumboy learns 13 skills as it levels up, from Volt Crash at level 1 to Electrify at level 50.
3Electric Arc
80AttackDeals Physical Damage. SurgeSurgeGains an additional effect on its first action after entering the field.: This skill's Power +40.
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..
1Overload Circuit
—StatusReturns to the FieldReturn to the FieldThe Jini leaves the field, then immediately returns. Any Jini entering this turn is immune to this effect. at the end of the turn. The chosen skill's cast count +1 next turn.
2Range-Extended Battery
—StatusGains 1 stack of Electrocharge MarkElectrocharge MarkMark effect: Attack skills gain Surge, granting Power +10 for this hit..
Inspired by a new type of Electro Alchemy—who knew it could be put to use in Jini Duels?
5Thunder Shock
—StatusWeather becomes ThunderstormThunderstormDuring Thunderstorm, both sides gain 1 stack of Conduction at the end of each turn. (Electro-class Jinies are immune to this effect.) for 8 turns.
So, here's what I learned from the new Electro-class magic: Nothing is really insulating during a thunderstorm.
5Returning Blitz
45AttackDeals Physical Damage in a 2-hit combo and performs a RetreatRetreatThe Jini leaves the field and is replaced by a selected teammate. Any Jini entering this turn is immune to this effect..
A tactical retreat that catches both enemy and ally off guard.
2Paralyze
—StatusEnemy 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%.
3Electrify
75AttackDeals Physical Damage and inflicts 1 stack of ConductionConductionWhen your Jini gains 2 stacks of Conduction, it immediately takes Electro-class damage equal to 25% of its Health and loses 2 stacks of Conduction. (Electro-class Jinies are immune to this effect.) on the enemy.
"Safety Rule Number 1: Do not touch it. Number 2: If it touches you, do not touch anyone else."
Learned via skill tablet
Rumboy can also learn these 11 skills from Skill Tablets. Open a skill to see how to get its tablet.
Heat Tempering
40AttackDeals Magic Damage and performs a RetreatRetreatThe Jini leaves the field and is replaced by a selected teammate. Any Jini entering this turn is immune to this effect..
Scorch Assault
40AttackDeals Physical Damage. Counter: StatusCounter: StatusIf the enemy uses a status skill, this skill successfully counters: it gains priority and triggers a counter effect. - Increases this skill's Power by 4×.
100
Crushing Punch
65AttackDeals Physical Damage. Counter: StatusCounter: StatusIf the enemy uses a status skill, this skill successfully counters: it gains priority and triggers a counter effect. - Physical Attack +100%.
Initiative
55AttackDeals Physical Damage. PriorityPrioritySkills with higher priority act first, bypassing any Speed differences between Jinies. Priority can be stacked. +1.
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.
Psychic
—StatusTransforms into a random skill from an enemy Jini each turn, and this skill's Energy Cost -2.
Bloodline Skill
A Bloodline Elixir gives Rumboy one of 18 bloodlines, and from level 15 each bloodline teaches it its own skill. Rumboy holds one bloodline at a time.
60
60
80
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
Focus—Defense
Reduces 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. - Returns to the FieldReturn to the FieldThe Jini leaves the field, then immediately returns. Any Jini entering this turn is immune to this effect. at the end of the turn.
80
60
60
100
60
60Rumboy class matchup
As a Electro-class Jini, Rumboy takes increased damage from 
Earth skills and reduced damage from Electro, 
Wing and 
Mech skills.
Increased damage from these skills
EarthReduced damage from these skills
Electro
Wing
MechRumboy research topics
×150
×5×150×10
×50×10
