Guest Stars Ethan Peck as Kelso at 13 Joey Zimmerman as Hyde at 13 Broc Benedict as Eric at 13 Liliana Mumy as Donna at 7 Alexandra Brandl as Jackie at 12 Joey Hiott as Kelso at 7 Easton Gage as Hyde at 7 Katya Abelski as Jackie at 6 Nina Jefferies as Donna at 13 Brett Buford as Eric at 7