At its E3 press conference today, Sony aired a new trailer for its upcoming Uncharted 4 standalone expansion, Uncharted: The Lost Legacy—and with it, a new mysterious character to join the cast.

Uncharted: The Lost Legacy features Chloe from Uncharted 2: Among Thieves as the main protagonist and Nadine (Uncharted 4: A Thief’s End) as her faithful-though-probably-unfaithful-then-faithful-again sidekick. The newest character added to the bill—who has yet to be named—is a man who seems hesitant to associate with a couple of thieves, though will most likely do so in order to achieve a common goal: find and claim the Tusk of Ganesha.

Uncharted: The Lost Legacy is currently available on the PS Store for pre-order at $40. Pre-ordering the expansion at select retailers will get players a complimentary download code for Jak and Daxter: The Precursor Legacy; a PS2 Naughty Dog game coming to PS4 via PS2 Classics this year.

Uncharted: The Lost Legacy launches on the PS Store on August 22.