Overgeared Hero: Merge RPGAll games

Overgeared Hero: Merge RPG/Heroes & Pets

SeirenMythic

Seiren

Activation cost 2MythicPet

Companion pet. Activation cost 2 of your 5-point pet budget per run.

Tier: S on the Overgeared Hero: Merge RPG tier list

Top-band survival pick for spike stages and tank Warriors: a cushion worth 200% of max HP at fight start, with no damage of its own.

Overview

When the first big hits decide a run, Seiren is the pet that keeps you alive. Healing Song wraps you in a Waterdrop Cushion worth 200% of your max HP when the fight starts, so a boss has to get through three times your health before anything reaches you, and a later star adds another cushion on entering Berserk. Rose carries it in all three of her chapter clears on Best Loadouts, and one of Rebecca's late chapter runs saves it for the final boss.

Its stars lean toward healing builds: from 2 stars, any overheal adds to the cushion, so a hero with steady healing gets more out of it. What it can't do is deal damage. On a burn build that already survives, Red Dragon's opening hit ends fights sooner, which is why most damage runs leave Seiren out. It costs 2 energy, and no upgrade lowers that.

Loadouts with Seiren

Trixie chapter push

Chapter push · Chapter 105

Seiren's fight-start Waterdrop Cushion, worth 200% of max HP, soaks the opening burst while the Mirror is still stripping buffs. White Wolf Captain gives every weapon 30% Haste for 10 seconds, and Transformation Magic: Charm is a weapon, so it strips more often in that window. Mimic merges everything mergeable in one go, which is how the Charm-and-shield piece gets finished in time for round 3.

Spike execute, survive first

Chapter push · Chapter 148

Thunderbolt SpikeBroomGolden PigMithril Gloves

The whole plan is to survive until Parting Rose executes, so both pet slots go to defense: Seiren's cushion worth 200% of max HP and Flora's heal and cleanse every 4 seconds. Every spiked armor added makes the execute come sooner, and Golden Pig early pays for the rerolls that find them.

Spike execute

Chapter push · Chapter 133

Celestial Shield

Seiren and Flora keep Rose alive while Spike stacks build toward Parting Rose's execute, and Celestial Shield adds one more full heal if both fail. Mimic's merges get the spike armor finished sooner, which brings the execute forward.

Stun lock with a cushion

Chapter push · Chapter 120

Lightning Rod WandWyrdwood StaffIce Gloves

Lightning Rod Wand and Wyrdwood Staffs power the main lightning spell from round 1, and Instant Freeze completes the stun lock by round 4. Seiren's cushion protects Spark while that setup comes together, and Red Dragon's opener shortens every fight.

Lifesteal block build

Chapter push · Chapter 112

LongswordAnvilBloody CrownMithril Gloves

The run starts from Longsword and Anvil, aims for a Bloodletting Sword first, then Bloody Crown and Mithril Gloves. Seiren is held back for the final boss, where a cushion worth 200% of max HP is what lets the Block build survive long enough to win.

Pet order. Save Seiren for the final boss.

Berserk spike build

Chapter push · Chapter 110

Cleric's GlovesBerserk PotionHP PotionHero Circlet

Berserk Potions linked to several spike generators, backed by HP potions, build the Spike stacks that end in Parting Rose's execute, and Cleric's Gloves speed up the potions. Hero's Circlet is needed by round 3. Seiren's cushion covers the early hits and Red Dragon takes 40% off each enemy to bring the execute closer.

Spear crit push

Chapter push · Chapter 83

Tiger's 30% Crit Rate and 25% weapon damage stack with Spearman's Pride on an all-spear backpack. Seiren's cushion covers the opening hits, which matters for a hero with no defense in his kit.

Skill

Healing Song
Healing Song

When the fight starts, gain Waterdrop Cushion equal to 200% of your max HP.

Active · cost 2

Attributes

Value
Activation cost2

Seiren star progression

What Seiren gains at each star rank. Owning it raises every hero's Total HP, and each rank adds a star bonus and can change how its skill works.

Star bonus at 5★
40% HP
  1. Owned

    Ownership +4% HP

    Activation cost 2

  2. 1★

    Star bonus 8% HP

    1★ upgrade

    At Start of Batte, gain extra Waterdrop Cushion equal to 100% of your max HP.

  3. 2★

    Star bonus 14% HP

    2★ upgrade

    On Excess Heal, gain Waterdrop Cushion equal to 20% of the healed amount.

  4. 3★

    Star bonus 20% HP

    3★ upgrade

    When entering Berserk, gain Waterdrop Cushion equal to 200% of your max HP.

  5. 4★

    Star bonus 28% HP

    4★ upgrade

    On Excess Heal, gain extra Waterdrop Cushion equal to 20% of the healed amount.

    4★ upgrade

    Start of Battle and on entering Berserk, gain extra Waterdrop Cushion equal to 100% of your max HP.

  6. 5★

    Star bonus 40% HP

    5★ upgrade

    On Excess Heal, gain extra Waterdrop Cushion equal to 20% of the healed amount.

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