Sharquoi

"I suspect we are forcing the Humans into a tighter arena than they care to fight in - soon we may be able to use the Sharquoi."

- A cryptic mention of the Sharquoi

The Sharquoi is a Covenant-related entity. Near the end of the Human-Covenant War, around the time of the Battle of Earth, a Sangheili expressed to one of his comrades that they may soon deploy the Sharquoi.

Identity
"Q: What's a Sharquoi?"

- Fizzguy47

"A: Very freaking dangerous."

- Frank O'Connor

It is unclear what the term Sharquoi means, except that it is very dangerous. A common theory was that it was referring to a Drinol, an enemy beast that was cut from Halo 2.

According to Marcus Lehto, he animated the only existing Sharqoui back when Halo was planned to be on the PC and Mac.