The reason that Ryder (portrayed by Nick Robinson) was absent from episodes in Season 4 is that he was on location, filming his role as Zach in जुरासिक वर्ल्ड (2015).
Both actors mentioned while doing TV promos for the show that they had known each other since they were five.
Both Melissa Joan Hart and Joey Lawrence have competed in Dancing with the Stars (2005), Lawrence in 2006, Hart in 2009. He came in third, she placed sixth.
Joey Lawrence sings the theme song.