Alektor

Alektor (卵の冠（アレクトール）) is Hairein's Black Trigger.

Functions
It enables the user to create various animal-shaped bullets out of trion. These animals can be used for various purposes, such as forming shields to protect the user, or transforming opponents and their triggers into cubes, upon touching them. Its main weakness is that can only effect things made out of trion, so the opponents cannot be attacked if they are in their physical body.

Some of the animals seen include fishes, jellyfishes, lizards, birds and even small insects such as bees.

Trivia

 * Alektor (αλέκτωρ alékto̱r) is the Greek word for "rooster".