SD Gundam G Generation ETERNAL Devil Gundam Jr. Lv20 Guide

To clear Devil Gundam Jr. at Level 20 in the SD Gundam G Generation ETERNAL Strong Enemy Raid event, deploy a five-unit squad consisting of two invested ULT damage dealers, one dedicated tank, and two debuff-focused supports. Victory requires using your tank to bait single-target strikes, staggering vulnerable units outside wide-area threat zones, and firing your highest-damage ULT attacks only after Defense Down is applied to counter the boss's passive recovery.

Recommended Squad Roles

Clearing Level 20 requires stats scaled through 1.5 Anniversary progression and upgraded ULT units to survive escalating boss damage. Build your lineup around five clear roles:

Two Primary ULT Attackers: Bring units equipped with heavy armor-piercing or percentage-scaling weapons. Standard physical attacks lacking penetration struggle against the boss's defense values.
One Dedicated Tank: Deploy a durable unit capable of absorbing single-target hits and holding boss aggro on the front line.
Two Utility Supports: Bring units capable of applying Attack Down and Defense Down debuffs while maintaining party sustain through morale boosts and steady healing.

When configuring pilot abilities, prioritize accuracy, critical strike chance, and survivability perks over purely speculative one-shot bonuses.

Combat Mechanics and Threat Windows

Devil Gundam Jr. shifts its attack behavior as its health pool drops. Clumping units together invites team-wide wipes from high-damage area attacks.

Phase / Trigger	Primary Threat	Tactical Countermeasure
Initial Approach	Long-range artillery barrages	Move the tank into the aggro zone while keeping supports back
Mid-HP Threshold	Increased attack power and MAP attacks	Spread units across different tiles; rotate defensive abilities
Enrage / Low HP	High-damage single-target hits and passive HP regen	Pool SP for burst chains; reapply Defense Down every cycle

Tactical Positioning and Aggro Control

Proper spacing prevents Devil Gundam Jr.'s multi-target attacks from hitting multiple squad members simultaneously:

Advance the bait unit first: Move your tank into the perimeter of the boss's attack range before any other unit enters. This forces Devil Gundam Jr. to direct its lethal single-target strikes into heavy armor and damage mitigation.
Stagger ranged units: Position ranged attackers two to three tiles behind the frontline tank.
Flank the boss: Angle your offensive units toward the boss’s sides and rear. This improves hit rates, raises critical strike chances, and ensures directional area attacks strike only one unit at a time.
Trail with supports: Keep healers and buffers close enough to cast abilities without crossing into the boss's retaliatory blast perimeter.

Turn Execution Sequence

To overcome the boss's passive regeneration, synchronize your debuffs and burst attacks into a consistent four-turn loop:

Turn 1 (Setup and Baiting): Advance your tank into the enemy range indicator while keeping the rest of the squad safely outside the danger zone. Activate initial defensive squad buffs.
Turn 2 (Debuff Application): After the boss attacks your tank, move support units into range to apply Defense Down and Attack Down.
Turn 3 (ULT Burst Window): Unleash your primary damage dealers' ULT skills while Defense Down remains active. Coordinate support attacks in the same step to maximize burst damage.
Turn 4 (Reset and Heal): Restore the tank’s health pool immediately, reposition any exposed damage dealers out of hazard cones, and prepare to refresh debuffs for the next cycle.

If your tank's armor is compromised by boss debuffs, prioritize defensive skills or repositioning rather than committing unbuffed chip attacks. Preserving your squad structure ensures your offensive burst continuously outpaces Devil Gundam Jr.'s self-healing.