Eiyaa-Mahtuhaa

This unidentified alien creature is a native species of Erebus VII. Vaguely similar to lizards, they have horns, tails, and short legs and arms. After humanity discovered the planet, some of these creatures were captured and studied in an ONI research facility. They were detained in tubes filled with an orange fluid, where they remained after the facility was later abandoned.

Trivia
These creatures appear on the War Games map Abandon.

List of appearances

 * Halo 4