Pernicious Ethos

The Pernicious Ethos was an Alkyonides-class cruiser assigned to the 16th Thema of the Orion Arm. One of the first Alkyonides cruisers to be constructed, the Pernicious Ethos would fight against the Human-San'Shyuum alliance at the Battle of Prad Araon where it would break their defensive line and kill Taxiar Aleeiso, commander of the enemy forces. Ethos would also be present during the .
The cruiser was one of the few Forerunner warships to survive the Firing of the Halo Array and the Flood advance. As it was damaged during a battle against the Flood, the Ethos was sent to be repaired and resupplied at Shield World 0362, where it would remain for the next few thousand years.
The Pernicious Ethos would be rediscovered during the Remnant Campaign by The Forsaken. It would eventually be retrieved and sent to secret research facilities to uncover its secrets.
==History==
===War against humanity===
===Flood incursions===
===Rediscovery===
==Crew==
*Echo-of-Neutrality