Éomer

Éomer is a fictional character in J. R. R. Tolkien's Middle-earth legendarium. He is a prince of Rohan and a skilled rider and warrior of the Rohirrim. He is the nephew of King Théoden and, following Théoden's death, becomes King Éomer of Rohan.

In The Lord of the Rings, Éomer serves as a leading military commander of the Rohirrim during the wars at the end of the Third Age. He is instrumental in rallying the riders to defend Rohan against Saruman's forces and participates in the defense around Helm’s Deep and the Hornburg. He later joins the forces of Gondor in the War of the Ring and supports the allied campaign against Sauron.

After Théoden's death at the Battle of the Pelennor Fields, Éomer ascends the throne and leads Rohan in the final efforts against Sauron. He commands Rohirrim detachments at the Battle of the Morannon (the Black Gate) and works to secure an alliance between Rohan and Gondor. His reign helps stabilize Rohan in the domestic and postwar period, and he remains a steadfast ally of Gondor and its rulers.

In adaptations, Éomer is portrayed by Karl Urban in Peter Jackson's film adaptation of The Lord of the Rings. The character is commonly depicted as brave, loyal, and passionate about his realm and its friendship with Gondor, with a strong emphasis on cavalry prowess and leadership in battle.

Overall, Éomer is depicted as a central figure in the Rohirrim leadership during the War of the Ring, transitioning from a prominent martial leader under Théoden to a ruling king who guides Rohan through the victory over Sauron and into the Fourth Age.