Nonetheless, its fans remained sentimental. Jackson, New Jersey resident Thomas Cannavo maintained a “ALF” fan group for many years after the program ended. In 1997, he told The Times that his wife was worried he would call his newborn kid “you-know-what.” In 1992, Times war reporting in Sarajevo led to the discovery of the ALF bar, which was named after the television program.

Additionally, Mr. Gregory stated in a 2022 interview with the YouTube program “BTM Legends Corner” that 80 percent of the still substantial amount of fan letters he received was from Germany.

He remembered that his primary task on the show was to focus on the ALF puppet rather than Paul Fusco, who plays the puppeteer and voice of the character. Mr. Gregory claimed that “interacting with ALF became quite natural” over time. Born in the Los Angeles region on May 26, 1978, Benjamin Gregory Hertzberg was raised in Thousand Oaks, California. As a newborn, he appeared in ads.

His mother, Patty (Stenger) Hertzberg, was his manager, and his father, Gary Hertzberg, was a federal examiner of credit unions. Ben’s career was further aided by the seasoned talent agent Estelle Hertzberg, Gary’s mother.

In the 1980s, Mr. Gregory starred in several popular television series, such as “Amazing Stories,” “Punky Brewster,” and “The A-Team,” in addition to “Alf.”

His filmography includes the 1993 animated feature “Once Upon a Forest” and the 1986 comedy “Jumpin’ Jack Flash,” which stars Whoopi Goldberg as a lonely computer programmer in Manhattan. Still in his 20s, he abandoned acting to enlist in the Navy and serve as a weatherman on an aircraft carrier until receiving an honourable discharge, according to his sister. He got married and got divorced while serving in the Navy.

His sister, Ms. Pfaffinger, stated that he had lived with depression and bipolar disorder and had received treatment for both. In a subsequent YouTube video, Mr. Gregory stated he had seen Max Wright, the actor who portrayed his father on “ALF” and passed away in 2019, at a meeting of Alcoholics Anonymous and that they remained in contact. On social media, Mr. Gregory regularly shared posts concerning addiction and psychiatric illnesses.

Mr. Gregory was survived by his mother (now Patty Golightly), father, stepfather, Hal Golightly, stepmother, Judy Hertzberg, and a sibling, according to Ms. Pfaffinger.