PS5, XSX, PC.
2022.
Quote Originally Posted by IGN
[...] Speaking during DC FanDome, Rocksteady Studios' Sefton Hill confirmed Suicide Squad is a "continuation of the Arkhamverse" that began in Batman: Arkham Asylum and came to its seeming end in Batman: Arkham Knight. Hill explained that Suicide Squad is part of this world and will actually let players see the continuation of plot threads and characters first introduced in those Arkham games.

"This is a continuation of the Arkhamverse, so a lot of the threads and storylines you're going to see come to fruition in this game," Hill said.

This also means that Suicide Squad will not be in the same universe as WB Games Montreal's upcoming Gotham Knights, which focuses on the extended Bat-family of heroes in a new continuity. [...]
Suicide Squad: Kill the Justice League Set in Batman: Arkham Universe - IGN
Quote Originally Posted by IGN
[...] The four main characters are:
- Harley Quinn a.k.a. Dr. Harleen Quinzel, the "mistress of mayhem"
- King Shark a.k.a. Nanaue, the "demigod humanoid shark"
- Deadshot a.k.a. Floyd Lawton, the "most dangerous marksman alive"
- Captain Boomerang a.k.a. Digger Harkness, the "Aussie assassin extraordinaire"

Each member of the squad will have moves and abilities unique and specific to themselves, along with a slew of customizable weapons, all while trying to bring down the Justice League – including the all powerful, otherworldly Superman.

Rocksteady also revealed the game will allow single player or grouping up with friends to play 1 to 4 player co-op, all while swapping between characters at any moment. [...]
Suicide Squad: Kill the Justice League Playable Characters Announced - IGN