If you look in many continuities the Transformers always transformed on Cybertron. But it occurred to me during a long walk to school that this isn't the case in the movie universe (not including comics). In the scene on Cybertron did we see any bots in alt modes? I didn't. They were all humanoid. There were not TF jets or tanks - only warriors who only had a re-entry form but this changed when they came to earth. This may be old to everyone else but I've never thought about it until recently.