Daphne voluntarily goes with someone other than Fred when the gang splits up.
The Zombie is basically the same model as the one in Which Witch Is Which? (1969). However, his clothes were different colors.
For a rare occasion, one of Fred's monster traps actually works.
Alex and Lila's band reappears in Scooby-Doo! Frankencreepy (2014), which gives the band's name as the Alex Super Experience.