William Build Guide — Mecharashi

Last updated: October 5, 2026

William Build Guide collects build notes, tier position, skills, stats, teams, and related Mecharashi guides.

William

William Stein

SSR

Raider Assault Union of Northern Continental States

NDF Major, 20-year vet. Frontline expert since Milkhama landing. Blair loyalist crushing rebels. Past defeats left him with deep hatred. His savage style terrifies allies and enemies alike.

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Tier Position

Tier

T0.5

Suggested STs

Kong

Basic Information

Real Name: William Stein
Gender: Male
Profession: Assault
Occupation: Raider
Faction: Union of Northern Continental States
Blood Type: B
Height: 203cm
Mecha Drive Lv.: Ultimate I
Degree of Arashi Matter contamination: Medium
Current Military Rank: Major
Special Honor: Silver Moon

Combat Stats

Combat 294

Assault 425

Shooting 162

Tactics 113

Defense 339

Engineering 211

Initial AP3

Max AP5

AP Recovery/Turn2

Talent

Fearless Army

Base (0-2*)

Upgraded (3-5*)

In combat, for each enemy within range, DMG +5%, up to 20%.

Neural Drive

α (Alpha)

Slots: Attack / Dodge / Dodge

CEC 2 (α-1级)

Link Attack's effective times per turn +1.

Power Innovation 1 (α-2级)

AP Regen +1.

AP Optimization 1 (α-3级)

Initial AP +1.

β (Beta)

Slots: Attack / Dodge / Critical

CEC 3 (β-1级)

Link Attack's damage multiplier is increased to 0.3.

Power Innovation 2 (β-2级)

When breaking a part, restore 1 AP after combat, effective up to 1 time per turn.

AP Optimization 2 (β-3级)

AP Cap +1.

γ1 (Gamma)

Slots: Attack / Dodge / Dodge

Perfect Position 1 (γ1-1级)

Unlock the Assault Weapon's Ideal Range ability. When in combat with a target at Ideal Range, final DMG +15%.

AP Optimization 3 (γ1-2级)

AP Cap +1.

Adaptive Warfare 1 (γ1-3级)

At the end of the action, if an Active Attack was not initiated this turn, an extra 2 tiles can be moved.

Perfect Position 2 (γ1-4级)

When in combat with a target at Ideal Range, Hit Rate +12%.

Perfect Position 3 (γ1-5级)

When in combat with a target at Ideal Range, Crit Rate +12%.

Perfect Position 4 (γ1-6级)

When in combat with a target at Ideal Range, final DMG +30%.

γ2 (Gamma)

Slots: Attack / Critical / Critical

Destroyer 1 (γ2-1级)

The Fearless Army will also grant a Crit Rate +5% to self, up to 20%.

AP Optimization 4 (γ2-2级)

AP Cap +1.

Adaptive Warfare 2 (γ2-3级)

If not moved before an Active Attack, Re-ATK can be triggered, effective up to 1 time per turn. Unable to move before attacking.
Effects similar to Re-ATK cannot be re-triggered.

Destroyer 2 (γ2-4级)

In combat, for every 1 tile the target is farther away, DMG +3%, up to +15%.

Destroyer 3 (γ2-5级)

For each additional target hit by an AoE skill, DMG +3.5%, up to 17.5%.

Destroyer 4 (γ2-6级)

The effect of Fearless Army has increased to 7.5% for each enemy, up to 30%.