The writer of this episode, Dennis Marks, died one week after ABC Family Channel reran it in the 2nd week of January, 2006.
It is revealed that Firestar is a Sagitarius, and that Iceman is a Pisces.
If Ariel and her brother got sick in Earth's past because they had no white blood cells to fight Early Earth's germs, and if Peter cannot stay in the future for the same reason, why does he allow himself to KISS Ariel?
Since Peter did journey to the future, and he is a carrier of Early Earth's germs, hasn't he already doomed the future race by bringing the germs with him?
How, exactly, would returning Ariel and her brother to their own time period cure them of the diseases they've already caught while in Peter's time zone? Future Earth obviously doesn't have the ability to cure these diseases, because Ariel's father claims that Peter would have to be quarantined because he carries Early Earth's germs, and they'd never see each other again.
A bit of Marvel continuity is semi-present involving Doctor Octopus. When he gets one of his robot arms blasted off and later when Firestar fuses them all together, Octopus reacts with pain. In the comics, Dr. Octopus does feel the damage to his arms, however, it is much more physically intense, usually resulting in shock if an armed is removed. This was probably toned down for obvious kiddie violence reasons, but, it's still some nice continuity touches.