Sylvester Stallone, the legendary action star behind Rocky and Rambo, has spent decades at the top of Hollywood—but it hasn’t been all red carpets and friendly co-stars.

Known for his intense personality, brutal honesty, and alpha-male screen presence, Stallone has made plenty of enemies along the way.

While some rivalries were short-lived and eventually resolved, others have left a lasting bitterness. Here are the top 6 actors Sylvester Stallone reportedly hated the most—from on-set tensions to headline-making feuds.

1. Arnold Schwarzenegger

“He was always trying to outdo me. We were at war, no question.” – Sylvester Stallone

Perhaps the most infamous rivalry in action movie history, the feud between Stallone and Schwarzenegger dominated the ’80s and ’90s. Both stars competed relentlessly—for bigger muscles, box office dominance, and the title of Hollywood’s top action hero.

From taking jabs at each other in interviews to purposefully sabotaging projects (Schwarzenegger once tricked Stallone into starring in the infamous flop Stop! Or My Mom Will Shoot), this beef was as real as it gets.

Though the two eventually buried the hatchet and even co-starred in The Expendables franchise, there was a time when Stallone hated Schwarzenegger with a fiery passion.

2. Kirk Douglas

“He walked off the set like a diva.”

Veteran actor Kirk Douglas and Stallone clashed during the pre-production of First Blood. Douglas was originally cast as Colonel Trautman but demanded a completely different ending—one where Rambo dies.

Stallone, who had co-written the script, refused to let the story go in that direction. Douglas reportedly stormed off the project, calling Stallone difficult to work with. In return, Stallone considered Douglas arrogant and uncooperative.

The two never worked together again—and Stallone didn’t hide his distaste in later interviews.

3. Eddie Murphy

“His ego filled the room before he did.” – Industry insiders

While not publicly confirmed by Stallone, rumors have long swirled about bad blood between him and comedy superstar Eddie Murphy.

The tension reportedly began in the late ’80s when Murphy mocked action stars like Stallone in his stand-up routines and interviews. Stallone, known for taking himself seriously, didn’t find the jokes amusing.

Hollywood insiders say their paths crossed at several events, with Murphy allegedly mocking Stallone to his face. The two actors never worked together—and likely never will.

4. Bruce Willis

“He’s greedy and lazy… a pain to work with.” – Sylvester Stallone (Twitter, 2013)

The falling out between Sylvester Stallone and Bruce Willis is one of the most public feuds on this list. Willis starred in the first two Expendables films, but when he demanded $1 million per day to appear in the third, Stallone didn’t hold back.

He slammed Willis on Twitter, writing: “GREEDY AND LAZY …… A SURE FORMULA FOR CAREER FAILURE.”

Their friendship soured fast. Stallone replaced Willis with Harrison Ford in Expendables 3, a move that only fueled more speculation about their icy relationship.

5. Harrison Ford

“He walked in like he owned the franchise.”

Speaking of Harrison Ford—while he wasn’t originally on Stallone’s radar, their working relationship on The Expendables 3 was reportedly tense.

Ford came in to replace Bruce Willis and, according to some crew members, acted cold and disinterested on set. Stallone, a hands-on producer and writer, allegedly clashed with Ford’s laid-back, take-it-or-leave-it approach to the material.

While neither actor publicly addressed the tension, the lack of chemistry on-screen and Ford’s absence from later films raised eyebrows.