Minister of Etiology (Earth-5875)

"I see you never studied, Commander. They are the xenomorphs, one of the many test and obstacles we must pass to activate the holy rings and begin the Great Journey."

- - The Minister of Etiology to Rtas 'Vadumee

The Minister of Etiology was a san'shyuum minister during the First Contact War, serving aboard the DSC-class support ship Infinite Succor, at the Fleet of Particular Justice.

Skirmish on the Infinite Succor
During the Battle of Installation 04, the Infinite Succor orbited Installation 04 alongside the Fleet of Particular Justice when the Type-25 Spirit Brilliant Gift filled with xenomorphs crash-landed into the docking bay of the Succor. One hour later, a Special Operations team led by Rtas 'Vadumee and Bero 'Kusovai boarded the ship to investigate the loss of contact, where they discovered and fought against many xenomorph forms that spawned from the animals the Succor carried at its hunting grounds, until they reached the bridge, finding that its controls had been disabled.

At the bridge, the survivors encountered the Minister of Etiology, who revealed to them he had disabled the ship's controls and locked its self-destruct system from another section of the ship. He then ordered to have all of the Special Operations team scanned for any signal of xenomorph infection before they could meet him duo to the severity of the outbreak, which deeply angered the impacient Rtas.

The group then met with the Minister in a disclosed location of the vessel, where he, Rtas, and Bero devised a plan to evacuate the few survivors and have the ship destroyed by another warship of the Fleet of Particular Justice. They became aware that the xenomorphs had somehow "evolved" and discovered the access codes for the Infinite Succor by gaining the knowledge of the fallen sangheili warriors they had harvested.

As the xenomorphs continued to spread, the sangheili started to fortify the bridge and the engineering room, only to discover the xenomorphs were attempting to have the Succor perform a slipspace jump, leave the Soell system, and continue to spread through the rest of the galaxy, which would mean mass extinction. 'Vadumee noticed that the Minister of Etiology was only concerned about his own life, and making them wast their precious time. Angered, 'Vadumee slammed the Minister into the ground, spilling his blood everywhere and almost killing him, saying that he would have the Minister executed if his cowardice meant the death of his men.

Death
He was later absorbed and mentally tortured by the Proto-Keymind that had been secretly formed at a hive in the engine room of the ship. The Keymind then telepatically taunted Rtas, but the sangheili commander was able to change the course of the Succor to Soell, where the ship was destroyed, killing all the infection onboard.