Goodman recently spoke out about Barr's firing, insisting that he knows 'for a fact' that she's not a racist.
The 65-year-old actress and comedian took to Twitter on Tuesday to speak out after Goodman defended her in an interview with The Sunday Times. On Sunday, Goodman said he was "surprised" by ABC's firing of Barr for a racist tweet against Valerie Jarrett, a former senior adviser to Barack Obama. He also insisted that Barr is "not a racist."
"I thank John Goodman for speaking truth about me, despite facing certain peril from producers and network," Barr tweeted of Goodman, who played her onscreen husband, Dan Conner, on Roseanne for 10 seasons.
In his Sunday Times interview, Goodman said he was devastated that ABC decided to cancel Roseanne in the fallout of Barr's tweet. He will, however, be returning for the network's spinoff, The Conners.
“She had to sign a paper saying that she relinquished all her rights to the show so that we could go on," he explained. "I sent her an email and thanked her for that. I did not hear anything back, but she was going through hell at the time. And she’s still going through hell.”
“I know, I know, for a fact that she’s not a racist," Goodman said.
The 66-year-old actor has been one of the few Roseanne stars who has not spoken out against Barr. After her firing in May, Barr praised Goodman and Laurie Metcalf as "two of the greatest actors in the world."
In footage exclusively obtained by ET the same month, Goodman broke his silence on Roseanne's cancellation.
"Everything's fine," he said, before commenting on ABC deciding to suspend its Emmys campaign for the show’s 10th season.
"I wasn't gonna get an Emmy anyway," Goodman added, shrugging. "I've been up there  times already, and if I didn't get one, I'm not gonna get one."