Units

Inquisitive Soul Rhoa

ThunderOmni

Skills

LS
Mechanist's Soul

50% boost to Atk, max HP, Spark damage boosts BB gauge, 100% boost to Spark damage & boosts Spark damage for 2 turns when Sparks exceed certain amount

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ES
Edifying Knowledge

Adds Def ignoring effect for 2 turns to BB/SBB, Spark damage boosts BB gauge & adds probable Spark critical

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BB
World-Smasher Cannon
1 DC27BC

16 combo Thunder attack on all foes, probable Spark vulnerability infliction for 2 turns, powerful additional damage at turn's end for 2 turns, adds Earth, Thunder elements to attack for 3 turns & enormously boosts Spark damage for 3 turns

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SBB
Multi-Apocalypse Cannon
1 DC26BC

19 combo powerful Thunder attack on all foes, 5 combo powerful Thunder attack on single foe, probable Spark vulnerability infliction for 2 turns, powerful additional damage at turn's end for 2 turns, adds Earth, Thunder elements to attack for 3 turns & enormously boosts Spark damage for 3 turns

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UBB
Volt-God's Storm
1 DC30BC

24 combo massive Thunder Attack on all foes, 6 combo massive Thunder attack on single foe, inflicts enormous Spark vulnerability for 2 turns, Spark damage enormously boosts BB gauge, enormously boosts Spark damage for 3 turns & probable powerful Spark critical for 3 turns

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Stats

HPATKDEFREC
Base5,8692,6202,2382,079
Lord7,6553,2862,7842,595
Anima8,7803,2862,7842,295
Breaker7,6553,5862,4842,595
Guardian7,6553,2863,0842,445
Oracle7,6553,2862,6343,045
Rex9,6053,5113,0092,820

Bonuses

Max ImpHPx25ATKx40DEFx20RECx25
Omni+1HPx28ATKx43DEFx23RECx28
Omni+2HPx34ATKx49DEFx29RECx34
Omni+3HPx43ATKx58DEFx38RECx43

Evolution

Thunder Pole Rhoa
Miracle TotemThunder TotemThunder TotemThunder PotMetal Mimic
Zel500,000
Lightning Rod Rhoa
Lightning Rod Rhoa
Thunder Mecha GodMiracle TotemThunder TotemThunder PotMetal Mimic
Zel1,500,000
Roaring Staff Rhoa
Roaring Staff Rhoa
Thunder Mecha GodThunder Mecha GodMiracle TotemThunder TotemThunder PotMetal MimicDragon MimicLegend Stone
Zel3,000,000Karma1,000,000
Inquisitive Soul Rhoa

SP Enhancements

30% boost to Atk, max HP
10 SP
Boosts Atk when BB gauge is over 50%
10 SP
80% boost to Spark damage
10 SP
Boosts 80% Spark damage to 100% Spark damage
10 SP
Normal attacks may hit all foes
20 SP
Enhances BB/SBB's Spark damage boost effect
30 SP
Enhances BB/SBB's Spark vulnerability infliction effect and its success rate
20 SP
Adds huge elemental damage boost for Earth, Thunder types effect to BB/SBB
30 SP
Adds probable Spark critical effect to BB/SBB
40 SP
Adds Spark damage boosts BB gauge effect to BB/SBB
40 SP

Suggested SP build

Offensive Buffer and Nuker Build100 SP
30% boost to Atk, max HP
10 SP
80% boost to Spark damage
10 SP
Boosts 80% Spark damage to 100% Spark damage
10 SP
Adds huge elemental damage boost for Earth, Thunder types effect to BB/SBB
30 SP
Adds Spark damage boosts BB gauge effect to BB/SBB
40 SP
Notes

Rhoa can be used as a buffer and nuker. This build was made with a Mono Thunder team setup in mind. As you are approaching late game, you will need to focus on mono element squads. Although Rhoa may not have the strongest numbers to be the Thunder Elemental Damage lead and buffer. He can be a budget option for this purpose. If you want to keep Rhoa in a mixed element squad, you can forego the Elemental Damage Boost and go for the Enhance Spark Damage Boost instead.

by Shiranui#0442, on the Brave Frontier Wiki (CC BY-SA)

General Build100 SP
30% boost to Atk, max HP
10 SP
Boosts Atk when BB gauge is over 50%
10 SP
80% boost to Spark damage
10 SP
Adds huge elemental damage boost for Earth, Thunder types effect to BB/SBB
30 SP
Adds Spark damage boosts BB gauge effect to BB/SBB
40 SP

by Acme Gamer#1352, on the Brave Frontier Wiki (CC BY-SA)

Suggested spheres

Heaven's EdgeVash's Angel ArmTarok's BloodlustUmbra WingMalicious TormentAnimal MaskDeceitful MaskCarlancas

Similar units

Boltstriker LlevaWhitefang KisraiMillions KnivesVash the StampedeTouka KirishimaFeral Commissar KassiaNoble Prince MordredDemon Ulfhednar ZelionZedus the GreatKassia

Voice Lines

Summon

Yeah, that's the one. Someone who could take over my research. Still, it's not like I'm planning on retiring.

Evolution

I realized something in Ishgria... I realized that there are still a lot of things that I want to make, and to learn about.

Fusion

This isn't all it takes to achieve my dreams. What do you say? Let's aim higher, together.

Lore

Had Rhoa survived and returned from Ishgria, he likely would have devoted all his waking hours to researching the otherworldly technologies discovered during that fateful expedition. He may even have worked alongside his genius nephew in the Summoners' Research Lab, realizing his long-held dream with the perfection of Mock Unit technologies. Given that Rhoa's technical expertise was based in combat experience, his Mock Unit designs likely would have replicated the original being's powers even more accurately.