The roster of Marvel's core Avengers team is expanding with two somewhat unexpected recruits from the team's past in February 2022's Avengers #53 - including at least one returning member who was straight up trying to kill the Avengers as recently as this summer.
Those two new recruits are Jane Foster, the current head Valkyrie, and Namor, King of Atlantis - who has been a recurring enemy for the Avengers throughout writer Jason Aaron's run, even recruiting his own squad of villains to fight surface world targets, and clashing with the Avengers for control of the Phoenix Force in the story Avengers: Enter the Phoenix.
It seems Namor's return to the team, after a period as their enemy (he's often gone back and forth from hero to villain and everywhere in between), will be predicated on Doctor Doom's new Masters of Evil, formed by villains from around the Multiverse. Weirdly enough, Doom and Namor had their own long-running villainous partnership in the classic '70s title Marvel Super-Villain Team Up.
As for Jane Foster, she's also a former member of the Avengers from her time as Thor, prior to dying and being resurrected as a Valkyrie. She's since gone on to reform the Asgardian order of Valkyries, including recruiting the original Valkyrie Brunnhilde, who was herself a member of the Secret Avengers.
Even though Jane's been an Avenger before, she hasn't been on the team at the same time as Thor Odinson, from whom she inherited the mantle and powers of Thor, and to whom she returned it later on when she became Valkyrie. Avengers #53 will mark the first time both Thor and Jane have been Avengers simultaneously.
There's another surprising Avengers reunion going on in Avengers #53 - a meeting between Black Panther and Namor, the monarchs of Wakanda and Atlantis, respectively. They haven't been Avengers together in some time (if ever, for longer than a short period).
In fact, they're more recently known as bloodthirsty enemies, owing to Namor leading Atlantis in an invasion of Wakanda in Avengers vs. X-Men, and Black Panther's counterstrike in which Wakanda attacked Atlantis in the event Infinity.
Though they did sorta work together as members of Marvel's Illuminati in Jonathan Hickman's New Avengers, that partnership was tenuous at best, with Infinity complicating it even further. Black Panther and Namor's rivalry and what them both being Avengers could mean isn't lost on artist Javier Garron either, who put the two at each others' throats on the cover of Avengers #53.
It's interesting that both Jane and Namor are joining the Avengers in 2022, as Jane is about to become Thor in the MCU film sequel Thor: Love and Thunder, while Namor has been rumored as the villain of the Black Panther sequel Wakanda Forever.
Avengers #53 goes on sale on February 9, 2022.
Namor and Jane Foster are new to the current Avengers roster, but they've been on the team before. These are the best Avengers line-ups ever.