#Robert Downey Jr. unfollows Marvel co-stars, flips out fans

Mister Stark, we don’t feel so good.

Avengers star Robert Downey Jr., 56, has unfollowed his fellow Marvel cast members on Instagram recently, including Tom Holland, 25, along with his good friend Chris Evans, 40, and it’s got the internet blippin’ out.

This also comes just days before the release of 36-year-old Scarlett Johansson’s first MCU standalone film, “Black Widow” on July 9.

This social media sequel to the Avengers breakup went widely unnoticed over the holiday weekend — but more and more Iron Man/Tony Stark fans are beginning to express their shock online.

“i wasn’t ready for RDJ to unfollow the whole Marvel cast, it’s like the end of an era,” one Marvel fan tweeted.

Another fan demanded Downey Jr. reunite with the cast.

“FOLLOW MARVEL’S CAST ON INSTAGRAM AGAIN NOW.” User @lokipetista tweeted at the actor.

Actually, it’s not just MCU people he’s split from – none of Downey’s current 43 followees are actors, prompting other theories unrelated to possible bad blood.

His Instagram bio is also a prompt to “get involved” with Footprint Coalition, an organization of environmental investors that Downey founded.

Despite the public freakout, Downey, who last reprised his role of Iron Man in the 2019 Infinity Saga conclusion film “Avengers: Endgame” still follows his former colleagues on his since active Twitter.

Maybe Thanos had one more trick up his sleeve, but this didn’t seem inevitable.

The Post reached out to Downey’s reps and is awaiting comment.