Bob Uecker will guest-star in a Season 5 episode.
Apparently, it will be in the annual birthday episode, where Beast Boy competes with Robin as to who will have the best birthday.Producers Aaron Horvath and Michael Jelenic revealed to SYFY WIRE that the 84-year-old Brewers booth man (and sometimes actor) will appear in a yet-to-be-determined episode in Season 5, after the Teen Titans Go! movie is released.
"As part of his strategy to win, Robin invites Bob Uecker to his birthday in hopes of luring the other three Titans to his birthday to win," Horvath said about the yet-to-be-produced episode. "There's some Mr. Belvedere episodes that Cyborg is excited to talk to him about, and he offers to give piggy-back rides [laughs] as part of his contract with Robin."
Horvath went on to tell us how this all came about: "In Season 1, I wanted to get him in for something, but I don't remember why. He was a guy who was in a lot of the things that I loved as a kid, Major League being one. I said, 'What about Bob Uecker?' as a joke, but if we could get him it would be awesome. Our casting director said, 'Oh, we can probably make that happen.' So for that particular episode it didn't work, but all of these years later, now that we've established Cyborg's deep love of the '80s, we had a good reason to pull him in. And to get him to play himself, that makes it super fun. We've got a good caricature of current Bob. He's super funny and he got the humor of the show."