Headmaster (Transformers)
Headmasters are a sub-group of characters from the Transformers meta-series, distinguished by their ability to detach their heads when transforming into their alternate modes, with the heads then transforming themselves into a humanoid form. However, this concept was taken in several different directions across the different Transformers universes.
Read more about Headmaster (Transformers): Transformers: Generation 1, Transformers: Robots in Disguise, Transformers: Armada, Transformers: Energon, Transformers Animated, Transformers: Disney-Pixar Label