Iron Maiden Moze 4.0: Indestructible Mech
MozeTransform Iron Bear into a 2.7-million-HP war machine with multiplicative minigun damage that scales with heat. Dark Army drones passively trigger fuel-return skills for near-infinite mech uptime, Plus Ultra doubles your health pool, and Radiation Hex grenades handle AoE. Dominates Mayhem 11 Takedowns and raid bosses.
Damage
Sustained minigun DPS, multiplicatively scaled up to +80% at max heat via Heat Exchanger
Survivability
2.7M Iron Bear HP (Plus Ultra doubling), ~1M shield bubble (Security Bear), constant Biofuel regen. Basically unkillable
Boss
Clears Mayhem 11 Takedowns and raid bosses like The Seer with infinite Iron Bear uptime
Moze
The only vault hunter capable of piloting Iron Bear. Her four skill trees provide the fuel-return mechanics, health scaling, and multiplicative damage needed to stay in the mech indefinitely while dealing massive sustained DPS.
.webp&w=3840&q=75)
Primary hardpoint. Damage increases as heat builds, synergizing directly with Heat Exchanger for multiplicative scaling. The hotter the minigun gets, the harder it hits.
How to Obtain
.avif&w=3840&q=75)
Tediore SMG that spawns drones which continue shooting even while inside Iron Bear. The drones passively proc fuel-return skills like Running on Fumes, keeping you in the mech indefinitely. Hold this weapon before entering Iron Bear.
How to Obtain
.avif&w=3840&q=75)
.avif&w=3840&q=75)
The cornerstone of Iron Bear's survivability. Doubles Moze's max health, which directly scales Iron Bear's armor to roughly 2.7 million HP. Absorbing bullets also grants action skill cooldown rate.
How to Obtain
.avif&w=3840&q=75)
Core multiplicative damage source for miniguns. Turns heat buildup from a penalty into a massive damage bonus, up to 80% more minigun damage at max heat. Look for a roll with +3 Feature Creep for 72% Iron Bear damage and damage resistance.
How to Obtain
.avif&w=3840&q=75)
Homing grenade that swirls around targets dealing constant radiation damage. Compensates for the minigun's lack of AoE by applying radiation DOTs that chain-explode groups. Has a 20% chance to auto-spawn when Iron Bear takes damage.
How to Obtain
.avif&w=3840&q=75)
20% chance on any damage to chain lightning to nearby enemies. Procs while inside Iron Bear, adding passive shock damage and status effects that trigger fuel-return skills.
How to Obtain
Combat Strategy
- ▸Equip Dark Army as your active weapon. The drones must be flying before you enter Iron Bear so Running on Fumes procs are live from turn one.
- ▸Confirm Radiation Hex is slotted as your grenade mod. It auto-spawns on Iron Bear damage for AoE pressure.
- ▸Enter Iron Bear. Plus Ultra provides 2.7M HP and Security Bear adds roughly 1M of shield bubble on top.
- ▸Fire both miniguns continuously to build heat. Heat Exchanger scales your damage up to +80% at max heat.
- ▸Radiation Hex grenades auto-spawn on Iron Bear damage, applying DoTs for AoE pressure and fuel procs.
- ▸Drowning in Brass kill stacks apply to the miniguns via a hidden interaction, adding bonus damage on top.
- ▸Focus fire high-health targets at peak heat to maximize the multiplicative damage ceiling.
- ▸Dark Army drones passively hit enemies, constantly proccing Running on Fumes to stop fuel drain.
- ▸Cloud of Lead adds incendiary damage to your minigun fire, triggering more Running on Fumes procs.
- ▸Biofuel constantly regenerates Iron Bear armor from all the status effects being applied around you.
- ▸Feature Creep at 4/1 (via Heat Exchanger) provides 72% Iron Bear damage plus massive damage resistance.
- ▸Auto Bear keeps the mech fighting if you need to briefly exit for cooldown resets.
- ▸Avoid the Exploding Bullets augment. Splash self-damage can destroy your own Iron Bear.
- ▸Never max Never Gonna Give You Up. It hits diminishing returns after only a few points invested.
Sources
Verified: 2026-04-02 · All content is original with full credit to original creators.