Lumi Master/Lumis

51–83

Ottersteel

Rating 51–83SteelStandard

Job tagsMining

At a glance

Why this tier: Ottersteel sits in C as the steadiest otter, with 97 DEF and a signature that stacks more DEF. At 87 ATK it holds a slot for an otter team rather than pressuring one.

Ottersteel's skills

Fixed kit always on Ottersteel, can't be swapped

Trait · passiveOtter-charged

Deals 5% more damage for each otter still standing on its side.

Signature skillArmor Strike

Hits the current enemy and raises this Lumi's DEF by 1 stage.

SteelCost 5Power 75

Basic attackArmor Bash

Its automatic attack: a Steel hit every 1s for 10 power.

SteelPower 10Interval 1s

Swappable skills choose which one to equip

Call for HelpUsed in official line-ups

Hits the current enemy and switches out; the Lumi coming in gains +1 ATK stage.

BrawlerCost 4Power 30

Swift Strike

Hits the current enemy and gives this Lumi 1 Swift.

SteelCost 4Power 50

Focus Blast

Hits the current enemy with a ki blast. Costs 1 less Energy per positive ATK stage; afterwards this Lumi's ATK drops by 1 stage.

BrawlerCost 5Power 70

Raid

Hits the current enemy. Always crits if this Lumi's attack speed is higher than the target's.

SteelCost 5Power 75

Uphill Fight

Hits the current enemy; +20% power for each ATK stage this Lumi holds above the target.

BrawlerCost 4Power 60

Speed Up

Every Lumi in your squad gains 1 Swift.

SteelCost 5Power 0

Skills marked "Used in official line-ups" are the ones the game's own in-client line-ups equip on Ottersteel. See those line-ups.

How to use Ottersteel

Ottersteel stacks DEF: 97 base, and Armor Strike adds a DEF stage every 75-power cast. That makes it the steadiest otter to lead with while Otter-charged adds 5% damage per otter standing. 87 ATK is weak. Its rainbow copy counts toward the Steel rainbows the Otterknight unlock asks for, which makes a spare worth keeping.

Compared with

The strongest Standard on the tier list and the ones placed just above Ottersteel, strongest first.

Recommended build

The game's own in-client line-ups run Ottersteel with Call for Help equipped: 3 official setups (2 different ones shown below), plus the materials it levels, stars up and evolves with.

Trait & signature skill (fixed)

Otter-chargedTrait

Armor StrikeSignature skill

Otter-charged: Deals 5% more damage for each otter still standing on its side. Armor Strike: Hits the current enemy and raises this Lumi's DEF by 1 stage.

Skill to equip

Call for HelpChosen in 2 of 3 official setups

Trainer skill

HealingRun in 2 of 3 official setups

ShieldRun in 1 of 3 official setups

Healing: Restores 30% of Max HP to ally Lumi on the field. Shield: Applies a shield to your own Lumi on the field, making them immune to the enemy's next skill damage and debuff. Expires upon leaving.

Level up & ascension

Ottersteel KeepsakeLevels up and ascends this line

Universal KeepsakeSwaps in for any Keepsake

Star Up

Ottersteel StarcoreRaises this line's star level

Universal StarcoreSwaps in for a regular or variant Lumi's Starcore

Each star adds damage dealt and cuts damage taken: ★1 +5% / -5%, up to ★5 +25% / -25%.

The Trait and Signature Skill come with this Lumi and can't be changed, so they set what the rest of the build is for. The skill and trainer skill picked above are the game's own — read straight off its official in-client line-ups on the Official Line-ups page. The Keepsake, Starcore and evolution materials are this line's own real items, from the game's own tables. Star Up's damage/mitigation numbers are the game's own published curve.

Type matchup

Takes extra damage from

Fire×2

Brawler×2

Royal×2

Takes reduced damage from

Grass×0.5

Flying×0.5

Ice×0.5

Dark×0.5

Psychic×0.5

Fairy×0.5

Steel×0.5

Recomputed from the game's own type chart against this Lumi's type(s) — dual types multiply. See the full Type Chart for every match-up.

Attributes

MaxMin

	Min	Max
ATK	55	87
DEF	65	97
HP	55	87
Work	29	61
Attack Speed	Roster average1s

Each column is the species' own Min–Max range at its reference level — the exact spread the in-game Aptitude tab shows (an individual catch rolls somewhere inside it). See the Stat Rankings to sort the whole roster by any of these. Attack Speed is the Skill tab's Attack Interval: the seconds between automatic basic attacks, fixed per species, so lower is faster. Every basic attack deals the same damage per second, so a quicker one lands more hits rather than more damage, which is what on-hit effects care about. Each Swift stack speeds it up by 10% and each Paralysis stack slows it by 10%.

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