Grouper

A Grouper is an orange Crasher. It spawns in groups of four in the pentagon nest.

Design
The Grouper looks like an orange irregular heptagon.

Technical
A very weak crusher comes in a number of four and spawns commonly in the Pentagon Nest. It is very fast.

Countering
Don't stay close to a rammer if this crasher is nearby. This crasher can help it ram you. But alone if not on very low health, they don't pose a threat. Be wary of this crasher, though because it can do quite a lot of damage to glass builds, and a Destroyer (crasher) can come and one-shot you after this, and yes, this happens quite commonly through crasher related deaths. And avoid it when at low health because on rare occasions the fourth grouper kills you.

Trivia

 * The Grouper is the only crasher that spawns in groups.