HELIOSKRILL-class Mjolnir

The MJOLNIR Powered Assault Armor/Helioskrill is a variant of the MJOLNIR Powered Assault Armor [GEN2] utilized by SPARTAN-IVs. The Helioskrill armor was a work of art crafted by a Sangheili prodigy inspired to test her skill against the best that humanity could muster.

In-game information
Unlock: Earn the Legend achievement in Halo: The Master Chief Collection.

Trivia
The Helioskrill armor is named after the predatory creature native to Sanghelios.

List of appearances

 * Halo 5: Guardians