The world of Transformers Unlimited in the fourth season the characters Optimus, Ratchet, Brawl, Bulkhead, Bumblebee, Sari and Aletta Gard, who are Sentinel Prime, Jazz, Jetfire, Jet Storm, Ultra Magnus and many more, then the Discepticon, including Megatron, Starscream, Lognot, Blitzwing and other new characters,