Word of God: In response to someone wondering if Harry qualified as furbait, Jill Thompson claimed that he would probably argue about it with the poster and even "weresplain" it to them.
The Other Darrin: Hannah, Katie, and the three actors mentioned above in Acting for Two are the only voice actors to return for the sequel.
Prop Recycling: Harry's character model was recycled from a previous Mainframe production, Beast Machines, where it originated as Noble (a werewolf creature formed from part of Megatron's spark who could also transform into a dragon form dubbed "Savage") You can tell by parts of the Face and Legs.
What Could Have Been: Originally the first special was going to use a more 2D watercolored style like the books but the book's author Jill Thompson wanted the special to be more CGI instead.
There were plans to make a TV series with the first special acting as a pilot but nothing came from this except for another special although Thompson stated in October of 2020 A series is still in the works.