Onocentaurs, or donkey centaurs, are similar to centaurs but are part human and part donkey. They always have long hair and long donkey ears. While young males are usually clean-shaven, more mature males prefer to braid their beards.

Onocentaurs do not charge in combat and tend to use two-handed weapons such as shortbows, staves and bardiches. Whenever possible, they punctuate combat with a mule kick which they are agile enough to deliver to an opponent facing them. They favor heavy armors, often a mixture of chainmail and plate.

Onocentaurs are fond of ale and like to socialize with other woodland beings such as satyrs.