David Boreanaz has spoken out in support of his former Buffy the Vampire Slayer and Angel co-star, Charisma Carpenter, following her allegations against series creator Joss Whedon on the set of the supernatural shows.

The actor took to Twitter to publicly show his support for his former co-star, after Carpenter accused Whedon of creating “toxic work environments” on the sets of the beloved series.

“I am here for you to listen and support you,” Boreanaz tweeted in response to Carpenter’s statement. “Proud of your strength.”

Carpenter responded to her former co-star, tweeting, “I know you’re there for me, David. I appreciate all you’ve done to demonstrate that support privately as well. Especially since Wednesday. Thank you so much.”

In her statement, Carpenter claimed to have experienced the toxic work environment “first-hand, repeatedly” and accused Whedon of “abusing his power on numerous occasions.”

She said Whedon has a history of being “casually cruel”.

“While he found his misconduct amusing, it only served to intensify my performance anxiety, disempower me, and alienate me from my peers,” she said.

Carpenter alleged that Whedon mocked her pregnancy, that he was “mean and biting”, and that he often played favourites, “pitting people against one another to compete and vie for his attention and approval.”

The actor said that she chose to come forward publicly with her story because she felt an “overwhelming sense of responsibility” to Justice League star Ray Fisher, who claimed Whedon was “gross, abusive, [and] unprofessional” towards the cast and crew of the 2017 film.

His allegations prompted an investigation into Whedon’s on-set behaviour by Warner Media.

“Recently I participated in WarnerMedia’s Justice League investigation because I believe Ray to be a person of integrity who is telling the truth.”

Carpenter concluded, “Despite my fear about its impact on my future, I can no longer remain silent. This is overdue and necessary. It is time.”

Read her full statement below.

David Boreanaz joins a slew of other co-stars to come forward in support of Carpenter. Buffy‘s lead actor Sarah Michelle Gellar backed Carpenter on Instagram, as did Amber Benson, who played Tara Maclay on the show.

Michelle Trachtenberg, who starred as Dawn Summers, shared Michelle Gellar’s post, adding that it must be known that Whedon’s on-set behaviour was “not appropriate… very not appropriate.”