‘90 Day Fiancé’ Community Mourns Chuck Potthast After His Tragic Death At 64

"90 Day Fiancé" fans are mourning a heartbreaking loss. Chuck Potthast, the beloved father of franchise star Elizabeth Castravet and a longtime fan-favorite on the TLC series, has died following a battle with glioblastoma, an aggressive form of brain cancer. He was 64. Potthast, who became one of the most recognizable and well-loved parents in the "90 Day Fiancé" universe, documented parts of his cancer journey on "90 Day Diaries," earning admiration from viewers for his positivity, resilience, and devotion to family. News of his death has sent shockwaves through the reality TV community, with thousands of fans flooding social media to share condolences, memories, and tributes to the man many affectionately called “the best dad on the franchise.”

Elizabeth shared the heartbreaking news on Instagram, posting a family photo alongside an emotional tribute. “Two weeks ago, tragedy struck our family and it has left us completely shattered,” she wrote. “My sweet, loving, and caring dad went to heaven. We’re trying to figure out how to navigate our lives and move forward without him. Please respect our privacy during this extremely difficult time.”

Fans immediately flooded social media with tributes, with one user writing, "This is horrible. I always saw him as the father I would have liked to have." Another expressed, "This is so sad. He was such a good father. He always tried to keep the family together and keep the peace between everyone. Rest in peace, Chuck."

Potthast publicly shared his diagnosis back in 2022 on "90 Day Diaries," where fans saw glimpses of his difficult journey fighting glioblastoma. Over the years, he remained transparent and hopeful, updating viewers and supporters whenever he could. In September, he revealed that what was meant to be a routine hernia repair turned into a grueling eight-hour operation after surgeons discovered his stomach wall had collapsed due to complications from previous cancer surgeries.

“My surgery was supposed to be about three to four hours long… Once they got in there, they see that my stomach wall had completely collapsed,” he explained from his hospital bed. Despite the setback, he expressed gratitude to fans: “I wanted to thank everyone for their prayers and support. It really helped me get through it.”

The tributes continued to pour in with thousands of fans rushing to Chuck’s social media pages, especially his last Instagram post from October 3, where he shared photos from a family boating trip in Florida.

The comments quickly turned into a memorial. “Rest in peace, Chuck. You were the best HUMAN being to ever hit the '90 Day' franchise," one user wrote. "Praying for his family.”

Another said, “You were such a supportive and loving father on '90 Day Fiancé,'” as a third commented, “Oh, Chuck, we adored you. May anyone who knew this gem of a man in real life know how much of an impact he made on viewers.”

A fourth chimed in with, “You’re gone way too soon. You are an amazing, loving father and we will miss you.”

Glioblastoma is one of the most aggressive and fast-growing forms of brain cancer. It develops in the brain’s glial cells and is known for spreading quickly into nearby tissue, making it extremely difficult to treat. Patients often undergo a combination of surgery, radiation, and chemotherapy, but even with treatment, the disease is notoriously resistant and has a high recurrence rate.

According to The Mayo Clinic, symptoms can include headaches, memory issues, personality changes, seizures, and neurological problems, depending on where the tumor forms. Because of its rapid progression and limited treatment options, glioblastoma is considered one of the most challenging cancers for both patients and families to navigate.

Chuck first appeared on "90 Day Fiancé" in 2017 when Elizabeth introduced viewers to the Potthast family during her storyline with Andrei Castravet. Over the years, his warm personality, willingness to help, and unconditional love for his children made him a standout presence, one frequently praised by fans as one of the most genuine people in the franchise.

Rest in peace.