Valco, a male human during the Imperial Era, worked as an explorer. He aided the fugitive Jedi known as F, since he was a friend to her Jedi Master. Valco beckoned F to the planet of Keelia, because raiders utilizing repurposed Separatist battle droids were a threat to Meevai Village. The raiders' goal was to seize the village chief as insurance, but his granddaughter, Haru, volunteered to take his place. During the celebration of the marriage uniting Haru and Asu, Valco exposed Haru's impending fate, with the intention of prompting F to intervene and protect the village.
Although F understood Valco's manipulation and initially hesitated, she ultimately decided to act. She intervened when the raiders, under the command of Lord Izuma, came to abduct Haru. As F revealed her Jedi identity to the raiders, Valco engaged the battle droids with a sniper rifle. Subsequently, Valco detonated his helmet, which was rigged with explosives, destroying the raider's starship and disabling the remaining droids. F triumphed over Izuma, rescuing Haru and the village. She then departed the planet, leaving Valco with the villagers.
Valco made an appearance in "The Village Bride," a short film within the Star Wars: Visions anthology. The film was penned by Takahito Oonishi and Hitoshi Haga, with Haga also directing. Kinema Citrus served as the production company, and the short was launched on Disney+ on September 22, 2021. Takaya Kamikawa provided his voice in the original Japanese version, while Cary-Hiroyuki Tagawa performed the English dub. Despite being credited as Vaan in the Japanese voice credits, the English credits and the episode guide for "The Village Bride" identify the character as Valco.