This is the first episode where the rangers double thrust their morphers.
Billy and Willy (should) have the same first name - "William".
Flashbacks of Eye Guy's attacks include original footage from the episode of Kyoryu Sentai Zyuranger that "I, Eye Guy" is adapted from, as he abducts the little girl that is Willy's Zyuranger counterpart.
Although Billy and the gang claimed that none of the science fair mischief was Willy's fault, they also didn't own up to antagonizing Bulk and Skull.