Dortos is a supporting character in the anime My Daughter Left the Nest and Returned an S-Rank Adventurer. He is depicted as a senior man, characterized by his white hair that reaches his shoulders and his yellow eyes. His appearance is further distinguished by a beard and a cape, and his weapon of choice is a halberd.

Dortos is a former S-rank adventurer who was known by the name "Shirogane". Due to this past, the protagonist Angeline affectionately refers to him as "Shirogane's uncle". When a great threat emerges, Dortos chooses to come out of retirement alongside his former comrade, Cheborg. Their decision to return to active duty is motivated by a desire to assist Angeline in her duties as an adventurer, lending their formidable experience and strength to her cause.

In his role within the story, Dortos serves as a powerful and reliable ally to the younger generation of adventurers. His most notable feat is fighting alongside Angeline alone to help her defeat the demon Ba'al, demonstrating both his enduring skill and his willingness to face immense danger. He is a highly capable fighter, noted for his ability to skillfully wield a heavy spear, a testament to his past as an S-rank adventurer. His primary relationships are with Angeline, whom he protects and supports, and with his former adventuring partner, Cheborg, with whom he shares a deep bond of camaraderie forged through years of fighting together.