Taylor Kinney, best known for his role as Lt. Kelly Severide on Chicago Fire, is paying tribute to his late co-star, Treat Williams, who tragically passed away after a motorcycle accident at the age of 71. Williams, who portrayed Kinney’s on-screen father, Benny Severide, was a beloved figure both on and off the set.

In an exclusive statement to PEOPLE, Kinney shared his deep sorrow over the loss of his co-star and friend. “My thoughts and prayers are with Treat’s family,” Kinney, 41, said. “He played my father on Chicago Fire, and was a father figure to everyone on set. I’ll always relish our conversations and his uncanny ability to light up a room. We all send love, he will be missed.”

Williams’ Legacy on Chicago Fire

Williams appeared on Chicago Fire from 2013 to 2018, appearing in seven seasons of the show. His portrayal of Benny Severide, the complicated and tough-but-loving father of Kelly Severide, struck a chord with fans and cast members alike. Kinney fondly remembers his time with Williams, emphasizing the actor’s warmth and generosity, both in his role as a father figure on screen and as a mentor to his colleagues off-screen.

The camaraderie and genuine affection between Kinney and Williams was evident on set. Kinney’s tribute underscores how deeply Williams impacted the Chicago Fire family, and his absence is felt profoundly by the entire cast.

A Warm and Charismatic Presence

Williams was known for his remarkable ability to “light up a room,” a sentiment echoed by many who worked with him over the years. His presence was magnetic, and his kindness was apparent both in his professional work and personal interactions. Kinney’s tribute highlights not only Williams’ exceptional acting talent but also his genuine nature, which endeared him to everyone who had the privilege of working with him.

Fellow Stars Share Their Tributes

Kinney is not alone in mourning Williams. His former co-stars from other projects, including Everwood and White Collar, have also shared their heartfelt tributes.

Matt Bomer, who starred alongside Williams on White Collar, took to Instagram to express his gratitude for their time together. “I was so honored that he agreed to play my father on White Collar, and he jumped in and made every day on set a joy,” Bomer wrote. He continued, praising Williams’ “patience and kindness” and describing him as a role model for actors. “Treat — you were an amazing actor and an even better person and I will miss you,” Bomer added.

The Tragic Accident

The news of Williams’ death was confirmed by his long-time agent, Barry McPherson, who revealed that Williams was killed in a motorcycle accident after a car cut him off while he was making a turn. McPherson, devastated by the loss, described Williams as “the nicest guy” and reflected on his long and successful career in Hollywood.

Williams was a fixture in Hollywood since the late 1970s, known for his roles in films like Hair and Everwood, and his work on television. Despite his long career, he remained humble and appreciative of his craft. “He was an actor’s actor. Filmmakers loved him,” McPherson noted, adding that Williams was “really proud of his performance this year” and had enjoyed a fulfilling, balanced career.

A Lasting Impact

Treat Williams’ legacy as both a gifted actor and a beloved mentor will live on in the hearts of his fans and colleagues. His dedication to his craft, along with his infectious personality, made him a standout in Hollywood for decades. As Taylor Kinney and others reflect on their memories with Williams, it’s clear that he touched the lives of all who worked with him.

Though Williams may be gone, his impact on Chicago Fire and beyond will not be forgotten. He will always be remembered not just for his roles but for the warmth, wisdom, and joy he brought to those around him.