Hunter is the sergeant of Clone Force 99 — the "Bad Batch" — a squad of clones with deliberate genetic mutations. His own enhancement is sensory: he reads electromagnetic fields and tracks by sensation. He is voiced by Dee Bradley Baker.
Clone Force 99 were introduced in the unfinished Clone Wars episodes finally released in 2020 and then headlined their own series, Star Wars: The Bad Batch, from 2021.
Hunter's function in that series is custodial. He is the one who decides, in the first episode, that Omega comes with them, and everything the show does afterwards is a consequence of a soldier taking responsibility for a child he was not ordered to protect. The performance is the quietest in the squad, which is deliberate: he is the only one who has thought about what happens when the war ends.