What is Black Noir I's real name in the TV series?

In the TV series, Black Noir I’s real name is Earving.

Earving is the first person to wear the Black Noir identity in the live-action series, and Nathan Mitchell portrays him. Unlike the comic-book version, this Black Noir is not a clone of Homelander. He is a Vought-created Supe whose abilities include enhanced strength, speed, durability, healing, stealth, and combat skill.

The character’s history is explored in season 3 flashbacks. Earving belonged to Payback, the superhero team that preceded The Seven, and suffered severe abuse from its leader, Soldier Boy. During a 1984 operation in Nicaragua, Soldier Boy badly injured Earving, leaving him disfigured, mute, and brain-damaged. Vought then continued using him as a masked operative.

A common mix-up comes from the series introducing a second Black Noir after Earving’s death. That replacement is an aspiring actor named Justin, so “Justin” is correct only for Black Noir II—not Black Noir I. The question’s “I” designation makes Earving the single canonical answer.