Characters

Introduction

Ratatan characters are not the damage dealers, and understanding that early saves a lot of confusion. You pick one Ratatan to lead the march, and their Ratatan Skill reshapes the Cobun army that actually fights. Keroronpa raises tempers and morale as an agitator, Harigittan protects the line and converts that protection into counter offense, Nyandola slips onto single targets and bursts them down as an assassin, and Mimizukyun locks onto weak points from range as a sniper. Behind them march the Cobun, Chorus who devoured everything in their path until a Ratatan gifted them a Medama and they transformed into loyal soldiers carrying the appearance and characteristics of their master. Choosing a character means choosing how your army behaves, so read the archetypes before you commit upgrades to a favourite.

Ratatan Character Quick Compass

Character Roster

Core Mechanics

Every playable Ratatan brings a Ratatan Skill that changes how your army behaves, and the Cobun fighting on your behalf inherit the appearance and characteristics of their master. That inheritance is the reason two players using the same weapons and Ratakaruta can have completely different clears: a Keroronpa party leans on morale swings and enemy temper, while a Mimizukyun party plays around a locked weak point that converts focused fire into burst windows. Support characters exist alongside the four leads, and Fortrun the shanty-singing ship anchors the story side of the roster. Unlocks are tied to story progress rather than currency, so advancing episodes is how you widen your choice. Because Ratatan Skills do not scale with the same gear you equip on weapons, archetype choice stays relevant for the entire climb and is worth deciding early rather than rerolling later.

Advantages

Character choice is one of the few decisions in Ratatan that costs nothing to get right, because unlocks come from story progress rather than gacha pulls or premium currency. That means you can genuinely try each archetype in a real run and pick the one whose rhythm loop you enjoy instead of being strong-armed by a banner. The archetypes are also cleanly differentiated rather than being minor stat variations: an agitator changes how enemies behave, a defensive lead buys the seconds you need to re-issue commands, an assassin converts a good command window into a kill and a sniper turns positioning into persistent pressure. For co-op groups this matters even more, since four players covering different archetypes smooth out the moments where a single-target team would stall against a crowd.

Challenges

The roster is genuinely wider in flavour than in raw power, so a character you love for their personality may not be the fastest way to clear the Hard Boss modifier. Community consensus shifts as balance patches land, which means an archetype that feels dominant this month can be adjusted the next. There is also a real cost to experimenting mid-run: because Ratakaruta reset between runs, testing a new character is cheap, but retuning a Ratatan Dock upgrade path is not, so switching leaders late in a climb can leave you with upgrades that suit a playstyle you have abandoned. Finally, some effects interact in ways that are not fully documented in-game, so values attributed to skills are sometimes community-derived rather than datamined.

Frequently Asked Questions

Quick Tips