Scott Gimple teased a new **Walking Dead** crossover at San Diego Comic Con.
The drama's former showrunner says the series and **Fear the Walking Dead** may crossover again.
"I wouldn’t expect it all the time. Things could happen. You never know who might pop up on Fear the Walking Dead. That includes The Walking Dead and potentially people in the past from Fear the Walking Dead.” Scott Gimple
Comicbook.com speculates Rick Grimes may appear on the spin-off series.
**Fear the Walking Dead** returns for the second half of its fourth season on August 12th.
**The Walking Dead** returns for its ninth season on October 7th.