Phra Lak is a central character in the Thai epic poem known as the Ramakien, which is derived from the Indian Ramayana. He is depicted as the younger brother of Phra Ram, the hero of the story, and is known for his loyalty and bravery. Phra Lak plays a significant role in assisting his brother during the quest to rescue Phra Ram's wife, Phra Nang Sida, from the demon king Ravana. In the Ramakien, Phra Lak is often portrayed as a noble warrior who embodies the virtues of honor and duty. His character highlights the themes of brotherhood and sacrifice, as he stands by Phra Ram in times of adversity. The story of Phra Lak is celebrated in various forms of Thai art, dance, and literature, reflecting its cultural significance in Thailand.