Well, this is some casting news that’s sure to put a smile on the face of many a genre fan out there. Yes, as the title suggests, both Mark Hamill and Ron Perlman are joining the animated Transformers: Prime Wars Trilogy.

Hasbro and Machinima have announced the news ahead of the Transformers: Titans Return finale that’s due to air tonight. Hamill will actually debut in said finale, playing the character of Megatronus, aka the Fallen. The blurb on that character reads:

One of the Thirteen Original Primes, Megatronus was exiled from Cybertron after murdering one of the other Thirteen, Solus Prime, effectively becoming the first Decepticon. In the finale episode of Transformers: Titans Return, he stays true to his past in a deadly showdown with one of the show’s beloved heroes.

As for Perlman, he’ll debut in the third and final chapter of this trilogy, voicing Optimus Primal when the series returns later in 2018. In addition to Perlman and Hamill, that third chapter will also feature the likes of Judd Nelson, Wil Wheaton, Jaime King and WWE badass Samoa Joe.