Patroclus (Hades)

Patroclus was a warrior in the Achaean army during the Trojan War, and was Achilles' life-long companion and romantic partner. He currently resides in Elysium, and is one of the few shades there who does not attack Zagreus, instead offering an assortment of items, much like Sisyphus and Eurydice.

It is possible to interact with Patroclus many times without properly learning his name, even if he's come up in conversations with Achilles. Until his name is revealed, either by reading his Codex entry or via other means, he will be unable to receive gifts and will generally respond to Zagreus coldly or bitterly.