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 if you cannot dodge it.

Trivia

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