There will be several intersecting plots in The Boys Season 3. Of course, most of the plot is under wraps, but a few things are certain. The first episode will be called "Payback," named after the superhero group from the comics. "[Payback] was the Seven before the Seven," Kripke explained. "We will be exploring the history of that team and all the members in it."
The Payback team in the comics included Stormfront, Eagle the Archer, Crimson Countess, Tek Knight, Swatto, and Mind-Droid. We've seen Stormfront and Eagle the Archer already (remember, he recruited The Deep into that Church cult). Tek Knight has also been mentioned. However, it's still uncertain if this roster will be incorporated into the Payback team or if they will take a different route. However, Payback will be prominently featured in Season 3, no matter who ends up on the final roster.
Also, Episode 6 is called "Herogasm." In the comics, Herogasm is a storyline where all the heroes take a secret vacation to an island to have a massive, extended orgy. "I've really wanted to do it, but needed to figure out our twist on it, so it's not just an hour of hardcore porn," Kripke wrote on Reddit in 2019 about the Herogasm concept. "But I think we got it!! Super excited about that."