What do Break role Aniimo do in combat?

A breaker's damage is not the point. The point is the stun, and a stunned boss takes 250% more damage. That window lasts until the enemy's break bar refills, which makes Break the largest single damage multiplier in the game. A team that never breaks anything leaves that multiplier on the table.

The bar you are working on is the break shield shown beneath an enemy's health bar. Break-role Aniimo drain it faster than anything else in your team. When it empties, the enemy staggers and stuns, and that is when your damage dealers should spend their biggest hits. In practice a breaker opens the fight and the rest of the team cashes in.

Best break Aniimo to start with

Inferlupa is one of the best breakers and fills the breaker slot in a wide range of teams, including dark and Irisalis teams. Its Break stat is 108.

Magma Rex depletes break bars quickly even against enemies that are neutral to its element, so you do not need a type advantage for it to do its job.

Mellobloom is the shortcut. Her Break sits around 204 to 212, far higher than other buffers, so she can buff and break at once. With her in the team you can break enemies without a dedicated breaker and use that slot for something else.

Ways to break faster

Minespine deals 20% extra break damage while tunneling. Rookie's Bouncy Sling makes the targets it hits take 15% more break damage for 15 seconds, so land it before your breaker goes to work.