Ronda Rousey delivered a knockout surprise at the San Diego Comic Con.

On Thursday, the former WWE star announced at the convention that she and her husband, Travis Browne, are expecting their second child together, according to People .

Rousey, 37, shared the big news while speaking with actor and panel host, Dave Bautista, about her first graphic novel, Expecting the Unexpected , which launched on Thursday via a Kickstarter campaign.