Creator Backlash: Alvin has said that he is not proud of episode 7, as he found it too dialogue heavy and that ending was a Deus ex Machina. He also admits that Basilisx was shoe-horned into the plot and would've distracted from future battles with the Koopalings and Mecha Mario.
Hey, It's That Voice!: Observant fans might recognize Mecha Sonic's voice from Episode 6 onward as Cooler's, although it's just soundclips from the Budokai Tenkaichi games.
Newcomer Basilisx also sports first-form Cell's voice as well.
Similarly, this extends to portions of the fandom that expected Alvin to cancel the series due to how long he was taking with each episode after 6, especially when he kept insisting that he wanted to do 3 sagas in 15-episode installments.
Plot details that weren't included in the opening include: Mecha Sonic holding a tournament, a feature length episode that had Chaos as the main antagonist, the Big Bad of the second arc would be Smithy with the rebuilt Axem Rangers at his side (Smithy would have also used Mecha Sonic's parts to build an Axem Ranger Blue), and a third arc that would have featured Princess Rosalina.