For what it's worth, Michael Bell (Zan/Gleek) & Louise "Liberty" Williams (Jayna) also voice two of the teens in the party. Seems Michael had at least one extra part in each short.
I can empathize with Zan's misfortune at the skating rink. I tried ice skating just once in my life. Couldn't balance my weight on the blades no matter how I tried. Give me roller skates any day of the week.