NHF – new heroes for Heroes V 3.1.

In that case, here is an approximate biography:

The servants of Shalassa dedicate themselves to self-improvement, but they are not immune to the corruption of Urgash. Even the most resilient soul can become a victim of Chaos if its will is not strong enough. While trying to prevent Sveltana from returning to the Seven Cities, Heligrin experienced the wrath of Mother Namtaru, and his mind plunged into the depths of madness. He revealed his devotion to Chaos during a battle with orcish detachments sailing to the islands of Pao. The horrific magic that drew out the demonic essence from the brave warriors and turned the unfortunate into those they were supposed to fight against forced the warriors of the Lotus Empire to turn their weapons against Heligrin and end his life. The name of the renegade was forever erased from history by the will of the Eternal Empress, but the orcs are not the kind to forget their enemies.