Netflix's sequel series, That '90s Show, has the potential to bring back some iconic guest stars from its predecessor, That '70s Show. However, this would create continuity issues as the actors gained fame in the 1990s. Dwayne Johnson, known as "The Rock" during his wrestling career in the 1990s, could make a meta-defying cameo since he previously appeared as his own father on That '70s Show. Lindsay Lohan and Joseph Gordon-Levitt, both child stars in the 1990s, have connections to the original show and could provide nostalgic nods in That '90s Show.
Alyson Hannigan, Seth Green, Melissa Joan Hart, Shannon Elizabeth, Eliza Dushku, Brooke Shields, and Katey Sagal are all '90s icons who could potentially make universe-breaking cameos in That '90s Show.
