Richard Donner, the filmmaker who was among the minds that conceptualized the hit “Superman” in 1978 and perfected the “Lethal Weapon” franchise, has passed away at 91.

According to his family’s spokesperson, Donner died on Monday in Los Angeles.

He became popular in 1976 with his first feature, “The Omen”, followed by the $1 million exceptional offer to become the 1978’s “Superman” director.

His love for the character has flowed to the film as he tirelessly huddles with producers to discuss special effects that would make the audience believe that a superhero could glide in the air. Donner cast Christopher Reeve to get the title, who eventually became known as the “Superman” from then on.

The genre was able to rule the US and even overseas box office by the 21st century. Head of superhero fare producers, like the DC Entertainment and Marvel Studios, have tied up with Donner when they kicked off their Hollywood fortune.

“Dick had such a powerful command of his movies, and was so gifted across so many genres. Being in his circle was akin to hanging out with your favorite coach, smartest professor, fiercest motivator, most endearing friend, staunchest ally, and — of course — the greatest Goonie of all. He was all kid. All heart. All the time. I can’t believe he’s gone, but his husky, hearty laugh will stay with me always,” “The Goonies” producer Steven Spielberg said in a statement.

Twitter on Monday was also flooded with messages paying tribute to Donner, ABC News reported.

Sean Astin from “Goonies”, for one, took to Twitter his respect for the late filmmaker.

“Richard Donner had the biggest, boomiest voice you could imagine,” the actor wrote. “He commanded attention and he laughed like no man has ever laughed before. Dick was so much fun. What I perceived in him, as a 12 year old kid, is that he cared. I love how much he cared.”