|Transformers Titans Return Blurr and Hyperfire|
If our memory serves us correctly: Blurr was never originally a Headmaster. He's a Targetmaster - which means his gun transformed into a mini-Autobot. However it was because Blurr lost a race (We know right? How'd that happen?) to Hot Rod (Yes the guy who got Optimus Prime killed) while Daniel Witwicky was driving or partnered with Hot Rod, that Brainstorm started espousing the benefits of having a "pilot" merged with the Autobots.
For more about Brainstorm and his Headmaster Arcana, click here.
Daniel would later be injured in combat and to save his life, Brainstorm turned Arcee's head into a cockpit/exosuit and Daniel became the first Headmaster - also creating in the process, the first Transgender Transformer - and ending the crush that many of us had on Arcee.
For more about Arcee before she became a Headmaster, click here.
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