Uruk Hai are a fictional race of creatures from J.R.R. Tolkien's The Lord of the Rings series. They are a breed of orcs created by Saruman, known for their size, strength, and resilience to sunlight. Uruk Hai serve as elite soldiers and play a significant antagonistic role, leading assaults against the forces of men and elves. They are most notable for their brutal tactics and loyalty to their masters, making them formidable opponents in the epic battles of the series.