It's safe to say Sinclair, Perdomo, Broadway, Phillips, Thor, Luh, and Germann will all reprise their roles in season two. It's also a strong possibility we'll get more cameos from the "Boys" cast — like Antony Starr's Homelander, Karl Urban's Billy Butcher, Colby Minifie's Ashley, and Claudia Doumit's Victoria Neuman, who all appeared toward the end of season one.
Patrick Schwarzenegger's "Gen V" character, Luke, committed suicide in the first episode, but he resurfaced in multiple scenarios throughout the season (nothing's too odd for the Boys Universe), so it's possible he could return for season two as well. Especially in the subconscious sense (like in season one), with his ex, Cate, and brother running amok at Godolkin.
Shelley Conn's character Dean Shetty was killed by Cate in the penultimate episode, so we likely won't see her in season two.
