Everyone remembers Rocky III for two things: Mr. T threatening to destroy everything and Sylvester Stallone’s transformation into a sentient bicep. But deep in the cinematic shadows lies a lost gem, one that involves Stallone stepping into the ring, not with Clubber Lang, not with Apollo Creed, but with his very own brother, Frank Stallone. Yes. For real.

In a behind-the-scenes training montage that feels like both a deleted scene and a family feud therapy session, Stallone turned Rocky III into a sibling slugfest. The footage recently surfaced and is now circulating like a fever dream on social media, showing the Italian Stallion beating on poor Frank with the kind of energy normally reserved for bad Yelp reviewers.

Rocky Balboa vs Clubber Lang in Rocky III | Credits: Metro-Goldwyn-Mayer

You haven’t lived until you’ve seen the Stallone brothers eating body shots, while Frank Stallone looks like he...