Heartbreaking news just in.

Thea White, the actress best known as the voice behind Bagge in Courage the Cowardly Dog, has passed away.

She was 80-years-old at the time of her death.

White's brother John Zitzner confirmed the sad news in a Facebook post, revealing that the voice actress died Saturday morning.

He wrote:

My sister recorded this prior to her surgery. She fought. She left us today at 11:05.

Zitner accompanied the post with the video White recorded just before her death.

In another post, Zitner wrote:

Thanks to Susan Bookshar for recording this last Sunday, July 25 some 5 days after her first surgery. Wishing her family good times as some of us were in Chautauqua for a few days, contemplating she would join us later in the week. Her last breath was Friday July 30 at 11:05 am. 2 days after her second surgery.

White was known for voicing characters in cartoons such as Corey in Pecola and Aunt Margaret in Scooby-Doo! Legend of the Phantosaur. Her most famous role, though, was Muriel Bagge in the hit Cartoon Network series Courage the Cowardly Dog, which ran from 1999 to 2002.

Strangely, this tragic news comes just mere days after it was announed that the Scooby-Doo and Courage the Cowardly Dog franchises are crossing over with one another in the upcoming film Straight Outta Nowhere: Scooby-Doo Meets Courage the Cowardly Dog.

According to the director/producer Cecilia Aranovich:

The film is definitely going to trigger acute nostalgia for those of us who grew up watching both Scooby-Doo and Courage shows and it will also bring these wonderful characters to a new generation of viewers. Merging the two worlds in a cohesive manner was one of the most challenging aspects of production. But I feel we found the right balance by bringing in the design elements and the color palette from the Courage world, as well as infusing Scooby and the gang with the more over-the-top takes and reactions that are so characteristic of Courage.

Our thoughts go out to White's family and friends during this hard hard time.

Rest in peace.