Dean Cain Slammed for Mocking Supergirl Star Milly Alcock's Looks as Fans Erupt in Fury

Just weeks before Milly Alcock is set to make her big-screen debut as Supergirl, the 26-year-old Australian actress has found herself at the centre of an ugly social media storm — and the man who helped pour fuel on the fire is none other than a former Man of Steel himself.

Dean Cain, who played Clark Kent in the beloved 1990s series Lois & Clark: The New Adventures of Superman, has been roundly condemned after responding to a post comparing Alcock's appearance to Cha-Ka, a prehistoric humanoid character from the 1970s TV series Land of the Lost. Rather than scroll past, the 59-year-old chose to weigh in with two words that instantly ignited the internet.

The response from Supergirl fans and the wider public was swift and scathing. Many pointed out the sheer irony of a man who once embodied the world's most famous symbol of decency and compassion choosing to pile on a young woman at the start of her biggest career moment.

"How unprofessional and disgusting of you to say that," wrote one user. Another added: "I can't believe I grew up watching this guy play Superman. To see him serve and feed on internet hate towards another person, especially a young woman, makes me really sad."

One particularly pointed response took aim at Cain's well-publicised Christian faith: "Not very Christian of you to make fun of a woman's looks just because you didn't like what she said."

Over on Reddit, the outrage was equally fierce. "She is like the most conventionally attractive woman ever. We can't win," wrote one user, while another cut straight to the point: "So an old washed-up loser is bullying someone young enough to be his daughter publicly because she dares to be the lead in a superhero movie. What a loser. I hope Supergirl will be a massive success. I will go watch it with my daughter."

This is far from Cain's first brush with public criticism in recent years. The actor previously made headlines for accusing director James Gunn of making Superman "woke" after Gunn described the character as an immigrant. More recently, Cain announced his intention to join US Immigration and Customs Enforcement (ICE) as a sworn officer, appearing on Fox News to declare: 'I'm stepping up. Hopefully, a whole bunch of other former officers, former ICE agents, will step up and we'll meet those recruitment goals immediately, and we'll help protect this country.'

Several online commenters were quick to highlight what they saw as a troubling double standard. "To make it worse, he's literally talked about receiving backlash and being given racist nicknames for being a half-Asian Superman actor," one Reddit user noted. "And yet here he is endorsing and actively participating in those same systems of bigotry and shaming."

The timing couldn't be more loaded. Alcock — who shot to global fame playing young Rhaenyra Targaryen in House of the Dragon — is just weeks away from the release of Supergirl, which hits UK and US cinemas and IMAX on 26th June 2026. Directed by Craig Gillespie, the film also stars David Corenswet as Superman and Jason Momoa as Lobo, with James Gunn and Peter Safran producing.

The original Twitter pile-on actually began with a fairly innocuous question — a user queried how Supergirl could have pierced ears if her skin is bulletproof — before another account escalated things with the Cha-Ka comparison. Cain's decision to engage with the latter rather than the former said everything, according to his critics.

Alcock herself has not publicly addressed the furore. But if the wave of fierce support flooding social media is anything to go by, she is heading into her superhero era with no shortage of people in her corner — and the kind of pre-release buzz that money simply cannot buy.