Roonwit

Centaurs in Narnia are half-horse, half-human, just as they are in Greek mythology. The Narnian centaurs are always seen positively, unlike the centaurs of Greek mythology. In all their Narnia appearances they are seen as wise prophets or sages, loyal courtiers and majestic, powerful warriors. They are highly skilled in astronomy and divination, being able to read the stars and tell of future events. They are also proficient warriors and healers. It is said in Narnia that no one ever laughed at a centaur and that no one who valued his life would ever saddle one (if offered the opportunity). They also have two stomachs— one human and one equine— which means they eat quantities of both human and equine food.

In contrast, the centaurs of Greek tales were nearly always a wild race who were violent, lustful, and usually intoxicated. The centaurs of Narnia are based on a unique and well known Greek centaur, Chiron, who, unlike all the other centaurs, was a noble, wise, and powerful being. Many centaurs in modern fiction are likewise based on Chiron.

Through the Narnia series, only three centaurs are named: Glenstorm in Prince Caspian, Cloudbirth in The Silver Chair, and Roonwit in The Last Battle. Unnamed centaurs appear in The Horse and His Boy (the centaur who makes the prophecy about the baby Cor growing up to save Archenland from danger) and in the final chapter of The Silver Chair (where Jill and Eustace ride across Narnia on two unnamed centaurs). Centaurs are also mentioned in The Horse and His Boy in the battle at Anvard. The centaur Oreius is named in the 2005 Narnia film The Chronicles of Narnia: The Lion, the Witch and the Wardrobe, but the centaurs in the book are not named.

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Wikipedia