Ultroloth

Ultroloths are the commanders of the yugoloth armies. They're the highest-ranking class of yugoloth.

Known ultroloths

Anthraxus / Phraxas, the current urgaloth
Bubonix, a powerful yugoloth commander stationed at the Tower of Incarnate Pain in Carceri.
Cholerix
Felthis ap Jerran, who is quite the anomaly, being a Neutral Good ultroloth.
Infestix, the first urgaloth
Inthracis
Kexxon, an ex-urgaloth
Mydianchlarus, an ex-urgaloth
Typhux