Sylvester Stallone dropped some major hints on Instagram this week about the future of the “Creed” movies. And the “future” seems to be somewhere in 1985, when a steroidal robot named Ivan Drago entered our collective consciousness in a little film called “Rocky IV.”

Stallone, who turned 71 on Thursday, suggested that Drago — who killed Apollo Creed in “Rocky IV” — will be a major part of the next “Creed” movie.

That post launched a flurry of wild theories. Many predicted that Drago, despite his steroid-shrunken testicles, fathered a fighting machine to take on Adonis Creed, illegitimate spawn of Apollo — pushing the family conflict and the Russia-USA feud into the new millennium.

I’m all for nostalgia, but if we’re going to do this Sly remake, we have to bring back the movie’s real underdog: the shearling-lined leather jacket Rocky wore while transforming into a bona-fide commie slayer.

While Drago sweated it out in a white singlet in a secret, needle-laden lab, Rocky was in the wilds of the Soviet Union, busting his butt in a delicious but totally impractical jacket that would be at home on most of today’s runways.

No breathable cotton or synthetic fabrics for him!

We see his tight-jacketed self carrying logs over his shoulders through knee-deep snow, lifting stones weighing more than Camrys, climbing to the top of a mountain and then, altruistic soul that he is, helping some poor Russian schlub pick up his overturned horse and buggy. The former loser from Philadelphia even outran a crew of nosey KGB folks tasked with tailing him.

But his greatest feat was pulling his drunken brother-in-law on a sled like some couture-clad beast of burden.

Today’s athletes can’t seem to hack it in anything that hasn’t been engineered for optimal sweat-wicking, body-cooling perfection. Rocky, however, did it all in a jacket without any dry-fit fabrics.

Has any athlete every achieved so much in primitive togs while looking so stylish? Probably not.

Then again, Rocky has a history of snazzy jacket moments: The ’70s black leather jacket from the original film sold at auction for $149,000 in 2015. In “Rocky II,” he splurged on a black satin zip-up jacket with a tiger on the back, which became his trademark.

For the sake of “Creed 2,” he needs to pass the style torch to Michael B. Jordan’s character and let him raid the archives.

With any luck, the shearling’s since been dry cleaned.