Just Plain Mark and Zippy were two Radio Disney DJs that aired weekday afternoons at 4:00 PM Eastern Time.

Both DJs were on at the same time and their show lasted till 8:00 PM ET.

[1] Both Just Plain Mark and Zippy became Radio Disney DJs in 1997[2] and retired in 2001.

Two songs were produced and can only be found on Radio Disney Jams 1 and 2.

[4] Although Just Plain Mark and Zippy did not appear anytime after, they hosted the launch party for Jams 3 at Disneyland in California.