In a fiery exchange, Pedro Pascal has ignited a storm by labeling author J.K. Rowling a "heinous loser" following her controversial tweets about transgender rights. The star of HBO's acclaimed series "The Last of Us" took to Instagram to voice his outrage after Rowling celebrated a recent UK Supreme Court ruling.

The ruling stated that trans women would not be recognized as women legally, and that 'sex' should correspond solely to biological sex. In response to criticism, Rowling cheekily remarked, "I love it when a plan comes together," suggesting her financial gains remained unaffected by public opinion.

Pascal didn't hold back, writing a blunt comment on activist Tariq Ra'ouf's post: "Awful disgusting SHIT is exactly right. Heinous LOSER behavior." This comment aligns him with a growing backlash against Rowling's views, particularly within the LGBTQIA+ community.

Ra’ouf's post also called for a boycott of HBO's upcoming Harry Potter reboot. He urged followers to relentlessly push the message that "trans rights are human rights" across all media related to the franchise, and to avoid supporting any Harry Potter related ventures altogether.

As one of the leading figures in HBO's powerful line-up, Pascal's endorsement of Ra'ouf's sentiment comes at a pivotal moment for the Harry Potter franchise. The new series aims to adapt all seven books into individual seasons, and the anticipation is high as fans await the choice of cast led by director Mark Mylod, known for a landmark episode of "The Last of Us."

HBO's chief, Casey Bloys, has dismissed concerns about the planned boycott. He pointed to the overwhelming success of the "Hogwarts Legacy" video game, which defied boycott calls and emerged as the best-selling game of 2023.

Pascal has long championed LGBTQIA+ rights, partly influenced by his sister, Lux Pascal, who publicly came out as a trans woman in 2021. Recently, he made a statement of solidarity at the UK premiere of the Marvel film "Thunderbolts," sporting a "Protect the Dolls" T-shirt, emphasizing his support for trans women.

Ra'ouf added: "[Rowling] is just so proud of all the work that she’s been doing over the last few years to stoke hatred and fear into the general public about a very small minority population that’s already some of the most misunderstood people on Earth."

The UK Supreme Court's ruling has ignited debates over the legal recognition of trans rights, allowing single-sex services to potentially exclude trans women while still upholding protections against discrimination for all trans people.