The Seven Deadly Sins: IDLE Berserk Estarossa Build Guide

To get the most value out of Berserk Estarossa in The Seven Deadly Sins: IDLE, run him as a hybrid frontline damage dealer and debuffer supported by Demon faction allies. Estarossa weakens enemy defenses and softens the frontline, allowing burst carries to eliminate durable targets quickly across high-wave stages and PvP matches.

Stat and Substat Priorities

Estarossa needs offensive stats to drive his damage multipliers alongside enough defensive padding to survive frontline trades while applying his debuffs.

Invest in stats in the following order:

Attack Percentage (ATK%): Estarossa's primary scaling stat. It enhances direct skill damage and improves the damage output of his damage-over-time effects.
Critical Rate and Critical Damage: Because Estarossa strikes multiple front-row targets simultaneously, high critical values deliver multiplied value across clustered enemies.
Debuff Accuracy / Effect Hit: Helps secure consistent attack-shred and defense-shred procs against high-resistance boss encounters and fortified PvP teams.
Damage Reduction and HP: Estarossa positions aggressively near the frontline. Securing defensive stats prevents him from falling to quick burst damage before his passive ramps up.

Skill Kit and Combat Mechanics

Estarossa functions by stacking disruption on the enemy squad and converting field debuffs into personal offensive power.

Primary Active Skill: Delivers wide area-of-effect (AoE) strikes against the enemy vanguard. It reduces both the Attack and Defense of affected targets on hit, lowering enemy burst threat while opening targets to follow-up damage.
Secondary Utility Skill: Applies sustained damage over time while hindering the target's ability to cycle through skills smoothly, leaving priority threats open to focused attacks.
Passive Trait: Increases Estarossa's Attack based on the total number of active debuffs on the field. As disruption spreads, both his basic strikes and active skills hit harder.

Team Composition and Demon Faction Synergy

Estarossa achieves maximum efficiency alongside Demon allies who provide faction attack bonuses and capitalize on shred debuffs.

Role	Hero Options	Synergy Objective
Primary Burst Carry	Assault Mode Meliodas, Traitor Meliodas	Exploits Estarossa's defense shreds to trigger rapid single-target eliminations.
Hybrid Debuffer	Berserk Estarossa	Inflicts AoE defense and attack reduction while generating field debuffs.
Utility and Control	Chandler, Zeldris	Provides damage mitigation, crowd control, and Commandment stat stacking.
Support and Sustain	High-tier Support (e.g., Elizabeth, Merlin)	Provides consistent healing to keep Estarossa operational in frontline positions.

Summoning Decision: Pull or Save?

Summon for Berserk Estarossa if your roster lacks multi-target stat shredding or if you are actively building an end-game Demon team. His dual-stat reductions provide immediate relief against high-defense progression walls and stall-heavy defense compositions.

Skip or delay pulling if you have limited summon currency and already run fully invested dark or demon carries such as Assault Mode Meliodas. Estarossa requires capable damage dealers to exploit the stat penalties he inflicts; without a functioning team core around him, his solo impact decreases significantly.