The entertainment world is mourning the loss of Hollywood veteran James Tolkan, who has passed away at the age of 94, marking the end of a distinguished 55-year career.

The celebrated actor, most famous for his memorable turns in Back to the Futureand Top Gun, died peacefully on Thursday at his residence in New York State. While his passing was confirmed by writer-producer Bob Gale and via the official Back to the Future website, a specific cause of death was not disclosed.

Tolkan earned a permanent place in pop culture history as the stern, “slacker”-hating disciplinarian Mr. Strickland in the first two installments of the Back to the Future trilogy. He returned in the third film to play the character’s grandfather, Chief Marshal James Strickland. Beyond the halls of Hill Valley High, he was widely recognized for his portrayal of “Stinger” Jardian, the intense air group commanding officer in the 1986 classic Top Gun, where he shared the screen with Tom Cruise, Val Kilmer, and Meg Ryan.

Born on June 20, 1931, in Calumet, Michigan, Tolkan’s journey to stardom was unconventional. He served in the United States Navy during the Korean War but was eventually discharged due to a heart condition. This turning point led him to pursue a career in the arts, eventually earning a BA in drama from the University of Iowa.

According to an obituary shared by the Back to the Future community, Tolkan arrived in New York City with just $75 and a dream. He supported himself by working on the docks while studying the craft of acting under the tutelage of legends Stella Adler and Lee Strasberg. Before becoming a screen staple, he dedicated 25 years to the New York theater scene, performing in everything from off-Broadway productions to major Broadway shows, including a role in the original ensemble of Glengarry Glen Ross.

In 1983, Tolkan transitioned his career to the West Coast and Canada after being cast in WarGames. His extensive filmography also includes a dual role in Woody Allen’s Love and Death. His final contributions to cinema were seen in the 2013 film Phil Spector, where he portrayed a judge, and the 2015 western Bone Tomahawk, in which he played a pianist.