Nycaloth

Nycademons, also known as nycaloths, are the elite cavalry in yugoloth armies, swooping down onto enemy flanks and tearing up unsuspecting troops. These arrogant, green-skinned creatures are 8' (2.4 m) tall, and possess four muscular arms, a doglike head and a pair of vast, bat-like wings. Nycaloth commanders are larger than their fellows, and lead entire battalions into war.

Nycaloths communicate using telepathy

Combat
Nycaloths most commonly use weapons. They are fond of giant two-headed axes. These axes are very commonly enchanted, with 90% being magical in nature.

Enchantment-Charm spells will never affect them.

Habitat
Despite the fact that nycaloths are possibly the most powerful of the greater yugoloths (daemons), they are afforded the least status. They always act in a careful and calculating manner. They have the innate ability to travel to any of the lower planes at will. They commonly travel to Nine Hells and the Abyss in order to scout the Blood War.

They are bitter of the status of the other greater yugoloths. They are constantly planning and scheming to increase their status  among yugoloths.

Notable Nycaloths
The nycaloths Aulmpiter, Gaulguth and Malimshaer led the Army of Darkness against Myth Drannor in 714 DR.