According to the cast listing on IMDB, Transformers Prime Episode 21 features many fan favorite characters, some with veteran Transformers voice actors. On the heels of the Encore Devastator news, this is just icing on the cake. Are you ready for some Transformers Prime Constructicons? That's right, the fan favorite Decepticon team will be making their first appearance in the untitled episode. We also get Dreadwing and Hound this episode. Bonecrusher - Jack Angel Scavenger - Gregg Berger Scrapper - Michael McConnohie Mixmaster - Neil Ross Dreadwing - Tony Todd Hound/Hightower - David Kaye ? - Alene Banas Oddly, there is no mention of Long Haul and Arlene Banas (G1 Carly) is listed with no character name. There is also no airdate mentioned.