Gimlet

The  is a Border Trigger, and a hybrid of two Asteroid`s.

Background
It was created at some point in the past by Border engineers.

Abilities
The Gimlet is created by combining two Asteroid`s Trion cubes. It as enhanced Armor-Penetration abilities capable of breaking the rabbits armor when used by a skillful shooter.

Large-Scale Invasion Arc
It was first seen used by Kohei Izumi to intercept/damage a Rabbit attacking Osamu and Chika.

Trivia

 * Gimlet's name seems to come from the drilling tool.