A delightfully quirky sitcom about a sarcastic alien with a taste for pet cats, ALF delivered laughs to millions of viewers during its original run from 1986 to 1990. The show centers on a wisecracking extraterrestrial named Gordon Shumway (nicknamed ALF — “Alien Life Form”), who crash-lands in the suburban garage of the Tanners, a regular middle-class family in California.

For a show about a hairy alien who cracks burping jokes, making ALF was anything but light-hearted. Behind the scenes, filming this family-friendly sitcom involved grueling hours, technical headaches, and bruised egos. The cast suffered from emotional burnout and said working on the series was a nightmare. Here’s a look at why ALF was one of the most difficult sitcoms to produce.

Puppetry turned the set into a minefield

The character ALF was an elaborate, hand-operated puppet voiced and controlled by show co-creator Paul Fusco. To make ALF appear life-sized, the crew built the entire set on a raised platform, about four feet off the ground. This allowed space for Fusco and the other puppeteers to move underneath and pop ALF up through a network of hidden trap doors.

While that was a clever way to accommodate the puppet, it created a logistical minefield for everyone else. The actors had to carefully avoid falling into dozens of hazardous holes in the floor as they moved around the set.

Additionally, scenes had to be blocked and shot with near-surgical precision to avoid breaking the illusion or revealing puppeteers. If one camera angle didn’t work, the entire scene might have to be reshot. Anne Schedeen, who portrayed mother Kate Tanner, later told PEOPLE she found it incredible that “word never got out what a mess our set really was.”

Filming was painstakingly slow and time-consuming

Many sitcoms are shot in front of a live audience in a few hours. But because of the complex puppet work, a live audience wasn’t possible for ALF. Scenes involving the puppet could take numerous attempts, especially when coordinating the puppet’s movements, dialogue timing, and interactions with props.

Filming “was a technical nightmare—extremely slow, hot and tedious,” Schedeen revealed. “If you had a scene with ALF, it took centuries. A 30-minute show took 20, 25 hours to shoot.”

The actors were miserable

A large part of the show’s appeal came from ALF’s odd-couple dynamic with the Tanner family. The tension was often authentic, however. The actors found the experience of working with a puppet to be physically and emotionally draining. They frequently had to perform without the real ALF, using stand-ins or tennis balls as placeholders.

Father Willie Tanner played the “straight man” to ALF’s careless antics, and actor Max Wright’s real-life exasperation with filming conditions made this relationship feel convincingly real onscreen. Wright was particularly vocal about his frustrations and often expressed resentment about being upstaged by a puppet. 

Things got so bad that after shooting the show’s final scene, Wright left the set, collected his belongings from the dressing room, and drove away without saying goodbye to anyone. “It was hard work and very grim,” he later confessed to People. “I was hugely eager to have it over with.” 

Paul Fusco was a perfectionist who commanded control over production

Paul Fusco wasn’t just the voice of ALF; he was the show’s co-creator, executive producer, and creative spirit. He was understandably protective of the project and insisted on complete control, redoing scenes multiple times to get the puppet’s gestures and timing just right. 

Committed to protecting the illusion that ALF was real, Fusco was even known to stay in character between takes and during interviews. This blurred the line between fiction and reality on set. ALF wasn’t merely a puppet; he was to be treated like a real co-star. Fusco’s perfectionism and control made cast members feel creatively stifled and created a power struggle between the human actors and the production process. 

The series didn’t even get a satisfying ending

The final episode of ALF  aired on March 24, 1990, and ended on an unexpected cliffhanger. The series was abruptly canceled after this episode, which might have been a good thing for the cast. Actress Andrea Elson (Lynn Tanner) had struggled with an eating disorder during filming and later said she suspected she and her co-stars would have “lost it” if ALF had continued for another year. 

In the show’s last episode, “Consider Me Gone,” ALF prepares to leave Earth with his alien friends, the Melmacians, but is ambushed and captured by the U.S. military just before boarding their spaceship. His fate remained unresolved until a 1996 TV movie called Project: ALF provided a belated conclusion. 

ALF’s legacy

Despite all the pain that went into making it, ALF was a commercial success. It was one of NBC’s most-watched sitcoms alongside The Cosby Show and Family Ties, and made millions in licensing and merchandise.

Max Wright later admitted that as the years passed, he looked back at his experience with less animosity. He conceded, “It doesn’t matter what I felt or what the days were like, ALF brought people a lot of joy.”

Could ALF return to television?

In 2025, Paul Fusco appeared on the ALFsplaining podcast and revealed that ALF was invited to host Saturday Night Live back during the show’s original run. Fusco declined at the time, not wanting to expose the puppetry “magic” that goes into making ALF perform.

While ALF did have a very brief cameo in a pre-recorded part of a 2013 episode of the late-night show, he’s open to a live speaking appearance in a Weekend Update segment, which conveniently offers a desk for guests (and puppets) to sit behind. “Maybe Lorne [Michaels] will hear that and say, you know what, let’s bring ALF back for an alien perspective on what’s going on in the world,” said Fusco.