The series marks the first time that Pete Capella reprises his role as Silver the Hedgehog after eleven years.
Scott Dreier (who voiced Knuckles the Echidna from Sonic Adventure 2 (2001) to Sonic Advance 3 (2004).) was originally gonna voice Knuckles in the series. But due to scheduling difficulties, David Humphrey (who voiced Shadow the Hedgehog from Sonic Adventure 2 (2001) to Sonic Heroes (2003).) took over the role for him in two episodes.
The series marks the first time that Ryan Drummond reprises his role as Sonic the Hedgehog after sixteen years.