S250 has once again given us a spoiler (found in the TFW2005 forums) for Transformers season 3. This time, it's a spoiler regarding a two-part episode of season 3! It also relates to the human versions of Optimus, Bumblebee, Bulkhead, and Ratchet that we saw previously. Forget pretenders, nevermind synthoids, and don't even think about Meltdown's transforming organics. Because the reason those four Autobots are humans, and why there was no model for Prowl, is one that we wouldn't expect:

"spoiler about human autobots

soundwave caught them and throw into a virtual world,there they all in human mode.no Prowl's human design because it's same as his hologram.it's a funny 2 episode story."