He was the one who brought Ciri to the Aen Elle king Auberon, promising Ciri that she would be allowed to return to her world, if she conceived a child with the king. Eredin however claimed that Avallac'h was lying.
He appears in the novels Wieża Jaskółki (English: The Tower of The Swallow") and Pani Jeziora (English: The Lady of the Lake) and is mentioned briefly in the Traveler's diary in the Side Effects premium module.
Avallac'h appears in The Witcher 3.
Journal entry Edit
The being trapped within Uma's tortured husk turned out to be Avallac'h — a powerful Sage of the Aen Elle elves. Geralt had made his acquaintance years before. Already during these prior encounters Avallac'h had displayed an intense and frankly, rather unnerving interest in the Elder Blood and its bearer, Ciri. His exact motives were unclear at the time, and he had made no particular effort to explain them to Geralt.
Geralt likewise had no idea what bound Ciri and the elf now. There was no doubt Avallac'h had helped her, had saved her numerous times from the Wild Hunt — but why? Alas, the Sage, quivering on a razor's edge between life and death, offered no answers to Geralt's burning questions.
He did, however, muster enough strength to utter a crucial piece of information — Ciri's location.
When Geralt got a chance to talk to Ciri about Avallac'h, he learned that the Sage had been her tutor and mentor for some time. They were bound by a common enemy. Avallac'h had been the chief advisor to the previous ruler of the Aen Elle, whose demise had precipitated a conflict between Avallac'h and the successor, Eredin. The Sage had thus made it his mission to protect Ciri from his new king's malicious designs, whatever the cost.
Ciri made it clear to Geralt that she trusted the Sage. He had saved her life on numerous occasions – including when, feeling the onset of the curse that would transform him into Uma, he resolved to hide her from the Wild Hunt on the Isle of Mists.
Avallac'h played a key role in staving off defeat during the defense of Kaer Morhen. After the battle, he advised the witcher that ultimate victory over Eredin and his ghastly cavalcade would only be possible with magic assistance. That meant Geralt would have to once again pact with members of the infamous Lodge of Sorceresses...
Seizing the calm before the storm, Avallac'h tried once more to teach Ciri to control her incredible talent. He soon found that Ciri was as stubborn a pupil as she was gifted - something that Geralt had discovered for himself much earlier.