Gundam UC Engage's highly anticipated Sub Mobile Suit System has finally arrived with its 2025/4/4 update! Read on to learn what Sub Mobile Suits are, what Sub Skills are, and how the new system works.

Sub Mobile Suit Guide

What are Sub Mobile Suits?

The Sub Mobile Suit system is a major gameplay update to Gundam UCE which allows players to allow 2 mobile suits to accompany one of the units in your party in battle.

These Sub-Mobile Suits help the main mobile suit in battle with their own stats as well as Sub Skills that increase its overall effectiveness. The feature is unlocked when players reach Player Rank 100.

How Does the Sub Mobile Suit System Work?

Sub-Skills Enhance the Main Mobile Suit

Each Sub-MS has a set of Sub-Skills that are granted to the main MS they're supporting. The effects and potency of these skills are directly influenced by the Sub-MS' Potential Lv. Potential Lv. 0 will not grant any Sub-Skills, and will only grant the Sub-Stats mentioned above.

These Sub-Skills vary for each mobile suit, and some sets of skills are better than others. These skills range wildly from simple buffs like bonus evasion, accuracy, or damage, to more powerful effects like Bullseye, healing, or even conditional damage buffs that grant increased damage against mobile suits of a specific unit category.

These bonuses can really be a game-changing effect that can really take things to another level, or cover for a mobile suit's weakness. When choosing Sub-MSs for your units, factor in their Potential Lv. and the Sub-Skills they grant.

Sub-MSs Can Only Join Mobile Suits of the Same Color Type

Only mobile suits of the same color type can join each other as Sub-Mobile Suits. This means that when choosing your Sub-MSs, you're limited to choosing only from a pool of units of the same type.

Which Mobile Suits Are The Best Sub-MSs?

Mobile Suit Gundam U.C. Engage Related Guides

All Tips and Tricks

All Tips and Tricks Guides

Arena (PvP) Guides
Arena Beginner's Guide (PvP)
Arena Guide	How to Get Started With the Arena?
Why Do I Keep Losing at the Arena?	How to Win at the Arena
Most Common Arena MSs and Counters	Best Arena (PvP) Teams
Top Ranked Arena Teams and Counters	PvP Team Building Guide
Arena Defense Team Building Guide	What to Grind for in the Arena
Elite Arena Guide
Beginners' Guide
Beginner's Guide: Tips and Tricks
Reroll Guide	How to Farm Diamonds
Panel Missions Guide	How to Strengthen Your Mobile Suits Guide
Combat System Explained	Haro Coin Farm Guide
How to Get Started With the Arena?	Clan Guide
Raid Battle Guide	Mobile Suit Categories Explained
Other Beginners' Guides
Beginner Mistakes to Avoid	Daily Tasks Checklist
Research Guide	Gacha Guide
Gacha Guide	UR Selector Ticket Guide
Mobile Suit Stats Explained	Pilot Stats Explained
Deployment Guide	How To Rank Up and Unlock All Content Quickly
Fragment Quest Guide	How to Get Skip Tickets
How to Get VIP Points	Haro Pass (VIP Pass) Perks and Benefits
How to Farm Coins Guide	How to Get More AP
How to Farm and Use Blueprints and Character Pieces	Recycle Points Guide
Engage Link Guide	Mock Battle Guide
How to Raise Your Player Rank Fast	How To Farm UR Custom Tickets
Intermediate Guides
Intermediate Guide
How To Pair Pilots and Mobile Suits	Team Building Guide
Returning Players Guide	What Upgrade Should I Do First?
Transcendence Guide	Potential Unleashed Guide
Unit Enhancement Guide	Unit Alteration Guide
How to Get Grand Coins	How to Get Unit Enhancement Points
Modules Guide	Skill Rate Level Up Guide
What To Buy at the Shop	Clan Battle Guide
Master Battle Guide	Status Effects Guide
Canon Mobile Suits and Pilots Guide
Other Intermediate Guides
Best Pilots to Get From Total War	Crit Rework Guide
Game Mechanics
Title Guide	Account Linking Guide
How to Send an SOS	How to Get Friend Medals
Mobile Suit Guides
How to Counter the Zeong	What is the Best Nu Gundam?
How Good is the Zock?	How Good is the Zeong?
How to Counter the Yellow Sazabi	How to Counter the Gundam GP02A
How to Counter the Zeta Gundam	How to Counter The-O
How to Counter the Penelope	How to Counter the Gyan
How Good is the Gyan?	What is the Best Sazabi?