The Boys season 3: Everything we know so far
New supes, new mysteries, Herogasm, and more. https://t.co/fKgaIMectk
- Entertainment Weekly (@EW) January 26, 2021
The actors are quarantining in Toronto for 2 weeks in early january before they start with the filming of the 3rd season, the production will follow all the safety measures to contain any potential spread of COVID-19
The Cast will be the same as the last season, we aren't sure about Aya Cash but she said this:
"I think they've left the door open, but I also feel like there's not much left of her. She's not technically dead, but I think you'll just have to see season 3 to find out what happened to her, [or] if she's going to be around at all in her smaller form."
Claudia Doumit (Congresswoman Victoria Newman) will have a bigger role this season.
Jensen Ackles is the newcomer with his role as Soldier Boy , the original Super hero.
Eric Kripke confirmed the super hero team Payback will be a big part of the plot for S3. The Payback of the comics was the 2nd most popular team of super-heroes, but in the tv show the team will be different, Kripke says :"Payback was the Seven before the Seven"
More at the source Source