Actor and passionate trans ally Pedro Pascal expressed utter repulsion at Harry Potter author JK Rowling’s recent social media post celebrating an anti-trans decision by the U.K. Supreme Court.

Pedro Pascal has dubbed JK Rowling a “heinous loser” after the Harry Potter author celebrated the UK Supreme Court’s recent ruling that trans women are not legally women under the Equality Act.

Pedro Pascal has accused JK Rowling of “heinous loser behaviour” in light of her latest social media posts about the transgender community. Last week, the Supreme Court made a divisive ruling, which stated that the legal definition of a woman in the UK now only covers those assigned female at birth.