Changers, Blaster, Perceptor, etc.)  suddenly began to appear during season two, beginning with episode  2.08 "A Prime Problem" and 2.03 "Dinobot Island Part 1". Their  sudden appearance was not explained. In the episodes produced after  Transformers the Movie (1986), in which Megatron  (Frank Welker (qv)) became Galvatron (Leonard Nimoy (qv)),  Frank Welker (qv) took over the role of Galvatron, which seems  appropriate. The actors who continued the roles they orignated in  Transformers the Movie (1986) for season 3 were:  Neil Ross (I) (qv) (Springer), Susan Blu (qv) (Arcee),  David Mendenhall (qv) (Daniel Witwicky),John Moschitta Jr. (qv)  (Blurr), Stan Jones (I) (qv) (Scourge), and  Roger C. Carmel (qv)(Cyclonus, Quintesson).