
Originally Posted by
TfWiki
"Anti-kibble"
There is a related phenomenon with no generally accepted name, in which a toy's robot mode has obvious elements of its alternate mode showing (usually in the chest area), which are not in fact part of its altmode. The original example of this is Powermaster Optimus Prime, who had the front windshield and grill of a semi-cab on his chest...which had no relation at all to his semi-cab mode. The false truck windows on the chest also showed up on Laser Optimus Prime and his redeco, Scourge, whose chests are on the underside of the truck in vehicle mode. Another example is the T-rex face on the chest of Transmetal Megatron from Beast Wars, which is not the same part as his actual T-rex face. A particularly inelegant example would be the Legends-class toy for Jazz from the 2007 movie, whose robot mode "bumper" chest ends up on his roof in vehicle mode.
Its use is even seen in Transformers Animated: Bumblebee has a false roof on his chest. A more notable case is Ratchet: He has false ambulance sides on his shoulder kibble (kibble AND anti-kibble). Sentinel Prime has an even more confusing example. His robot mode chest is a flat, round structure designed to be evocative of his much squarer alt-mode hood (which is his robot mode back).