Terrormaton Boss Guide
Terrormaton is the very first boss you will face in Etheria: Restart’s Threshold, a content area specifically focused on farming Modules to enable your Matrix Bonuses.
You can face Terrormaton on Basic, Hard, Nightmare, Inferno and lastly, Cataclysm difficulties – there are 3 stages for each difficulty jump.
When you reach Inferno I difficulty, Terrormaton will deal 30% Increased Daamge to ODD Element Animus, which increases to 100% on the final stage, Cataclysm!
Originally an engineering robot, it went out of control after being infected by Genesis. To become stronger, it destroyed countless machines and attached their parts to itself, eventually becoming what it is now.
In this guide, we will break down Terrormaton’s Skills, how to face this encounter, as well as recommending what we would consider an ideal progression team to help you along the way.
Terrormaton Skills
Scorched Earth
Terrormaton fires massive lasers to attack all enemies, dealing 450% damage, and there is a 70% chance to set Strike Prep back by 30% and inflict and 1-turn [SPD-]
Reconstructive Strike
Terrormaton fires massive lasers to attack all enemies, dealing 600% damage to permanently increasing 30% Basic ATK; after the attack, each surviving beast head will automatically follow up on the enemy with lowest HP percentage, dealing 360% damage.
Combat Resolve
Whenever an enemy dies, the Terrormaton immediately starts the next turn.
Prepare for Battle
At the start of the battle. all allies gain a 3-turn [Immunity].
Reform – Guarding Hand
The beast head grants a 2-turn [Def+] and 45% Strike Prep to Terrormaton
Reform – Attacking Hand
The beast head fires at the enemy with the lowest HP percentage, dealing 360% damage with a 100% chance to inflict a 2-turn [Def-]; the lower the targets HP, the higher the DMG Dealt.
How to beat Terrormaton
Terrormaton is the first Threshold Boss that players face. His kit revolves around scaling damage, heavy Strike Prep disruption, and follow-up attacks from his beast hands. Most critically, he punishes teams that aren’t prepared to manage both his buffed main body and his side units, which provide extra support, damage, and utility. If left unchecked, Terrormaton becomes an unstoppable force, particularly at higher difficulties where he deals increased damage to Odd-type units—up to 100% more on Cataclysm.
His Skill 1, Scorched Earth, is a full-team AoE that applies Speed Down and sets back Strike Prep by 30% with a 70% success rate. The safest and most consistent counter is to bring immunity-focused support units like Helkid, Lingluo, or Cachi the Guard. Cachi is especially valuable as he can extend buff durations, helping maintain uptime on immunity across longer fights. On top of that, Terrormaton’s Skill 2 deals even more AoE damage and permanently increases his Basic ATK every time it’s used—so the longer the fight goes, the more oppressive his damage becomes. He also gains extra turns via his passives when enemies die, so keeping your team alive is crucial.
The Beast hands are another major priority. The Guarding Hand gives Terrormaton DEF Up and Strike Prep, while the Attacking Hand targets your lowest-HP unit with a powerful DEF Down-inflicting hit that scales based on missing HP. This makes it important to either remove buffs from Terrormaton (via Veronika or Kazami) or prevent them outright with Block (Heinrich). To keep the Attacking Hand from sniping squishy allies, you can use Rin to apply AoE Taunt, directing the attack to a tankier unit who can handle the hit. Rin’s shield and DEF Up, paired with purifiers like Dorothy or Chiaki the Echo make her a standout pick here.
In terms of team building, Strike Prep management is essential. Terrormaton reduces yours and boosts his own—so bring support units like DokiDoki, Chiaki the Echo, and Kloss to keep your team rotating quickly and keep the boss locked down. Your core team should also cover DEF Down, ATK Down, Speed Down, and ideally have multi-role value. For example, Helkid provides ATK Down, immunity, and shielding; Kloss brings DEF Down and Strike Prep control; Rin offers tanking, taunt, and DEF Up. A strong lineup like Helkid, Heinrich, Kloss, Chiaki, and Rin can handle even the toughest version of this fight without relying on any Odd-type units—perfect for avoiding the boss’s Absolute Counter passive on higher difficulties.
