Even though the characters from STAR WARS: REBELS appear, none of the voice actors from that series work on this episode.
The Rebels sequence is based on the episode "Droids in Distress" from the show's first season.
Dr. Michael Nowka is the German Voice of C3PO in every Lego Star Wars Film/Series. He also had a Voice Role in Star Wars - Episode I.
Uli Krohm is the German Narrator in every Lego Star Wars Film/Series. He also had a Voice Role in Star Wars - Rise of the SkywalkerI, Rouge One, Star Wars Resitance, Clone Wars.