'Buffy' stars David Boreanaz and James Marsters break their silence on Joss Whedon controversy

Two major "Buffy the Vampire Slayer" stars have broken their silence about director Joss Whedon, who stands accused of toxic behavior.

David Boreanaz, who played Angel on "Buffy" and the titular lead of it's spin-off series, "Angel," rallied behind former co-star Charisma Carpenter, who detailed in a lengthy Twitter post the "abuse" she allegedly suffered while working for Whedon.

Carpenter, who played Cordelia Chase on both "Buffy and "Angel," issued a statement on Feb. 10 in support of "Justice League" actor Ray Fisher who first accused the director of fostering a hostile work environment.

Boreanaz replied to the actress' post over the weekend -- the one in which she accused Whedon of verbal abuse and retaliatory actions -- and praised her for coming forward.

"I am here for you to listen and support you. Proud of your strength," he publicly tweeted, which Carpenter replied to by expressing her gratitude.

"I know you’re there for me, David. I appreciate all you’ve done to demonstrate that support privately as well. Especially since Wednesday," she wrote.

Boreanaz wasn't the only fan-favorite vampire to publicly support Carpenter. James Marsters, who played Spike on "Buffy," expressed that he is "heartbroken" by the allegations.

"While I will always be honored to have played the character of Spike, the Buffy set was not without challenges," he tweeted. "I do not support abuse of any kind, and am heartbroken to learn of the experiences of some of the cast. I send my love and support to all involved."

Marsters and Boreanaz join a growing list of "Buffy" alums -- including "Buffy" lead Sarah Michelle Gellar -- who have voiced support for Carpenter.

Michelle Trachtenberg, who played Buffy's little sister, Dawn, has alleged that Whedon wasn't allowed to be left alone with her on set.

Other stars who have spoken out include Anthony Stewart Head, who played Giles, and Eliza Dushku, who played Faith.