TransFormers which have a Nebulan (humanoid) companion who transforms into the head of the transforming
robot, and does not form part of (but can usually drive or otherwise connect to) the large
robot's vehicle and/or beast mode/s.
Sometimes used to
mean the large
robot, sometimes the
small figure/head. (Japan only: some heads were brought out without bodies, and all heads were interchangeable between robots, making more sense of the term "headmaster").
Of course, it also means a
male head-teacher (now rarely used for PC reasons) - presumably it's a play on words (used as a model for later names such as Powermaster, Targetmaster etc.). Initially appeared in series 4 of generation 1.
Also, the first series of the Japanese Transformers cartoon (the 4th series overall) is called "TransFormers Headmasters".
The Headmaster Mindwipe, a
Decepticon who turns into a bat, has a Nebulan companion, Vorath.
OR
The Headmaster Vorath is
binary bonded to the transforming
robot Mindwipe.
