Yull

Yull was an Unggoy stationed on the Rapid Conversion and was part of Dadab's group. He was the first Covenant casualty of the Human-Covenant War. He killed Osmo by shooting him with a plasma pistol, thus tearing his stomach apart. He was then killed by Tartarus, who pulled off his mask and threw him into a whirlpool and down a series of waterfalls.

Yull was less intelligent than average, as were most Unggoy on the ship.