Prince Alor, younger brother to Princess Amue and a distant cousin of Princess Fala, resides on Planet Heracles. His family co-ruled the planet with Amue until their alliance with the Galra Empire ended in betrayal. Initially admiring Prince Imperial Sincline of Galra, Alor attacked the GoLion team during their infiltration of Heracles to stop a Galra-backed assault on Altea.

The destruction of his family and world followed: his older brother Samson, transformed into a MechaBeastman by Galra, was defeated by GoLion and executed by Galran allies. His father, King Heracles, died avenging this betrayal. Sincline then kidnapped Princess Amue for her resemblance to his deceased mother, forcing Alor into the role of regent and ruler of Heracles.

As regent, Alor demonstrated leadership despite his youth. He impulsively attempted to rescue Amue during an escape, resulting in both siblings becoming Sincline's hostages. Later, when the Altea-Heracles system faced a gravity well threat from a planetoid trap set by Sincline and Honerva, Alor commanded his fleet to support GoLion, persisting despite near-mutiny from officers over safety. After withdrawing, he organized Heracles' defense of Altea against Galran forces—a planet he once sought to destroy. This defense nearly collapsed until GoLion intervened.

Alor faced personal conflict when Amue, after escaping Galra with Shirogane Ryou's aid, chose to remain with Ryou on covert missions against Galra, distressing Alor for her safety. He later joined Fala and allied rulers in a treaty to overthrow the Galran Empire, contributing Heracles' forces to capture a key Galran weapon that enabled the invasion of Galra itself. Heraclean warriors participated in the final assault. Alor comforted Amue after witnessing Ryou’s death. His ultimate fate remains unspecified, though his experience as regent and commander suggests a likely ascension to kingship.