[@Scallop] Alright, lets see what you got.

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King Mu of Zhou - Ever want to be immortal? Mu really wanted to be immortal. So he set out on a series of wars, epic adventures, and failed each time. Perhaps one of the most famous anecdotes is about the animatronic that was made for him. A completely autonomous machine, and the first of its kind that had a beating heart and feelings. 
Christina of Sweden - Gonna be honest, this one was a recommendation to me, and her wiki page is remarkably dense. I can't help you on this one. 
Gilles De Ries - Non-Caster Class only at the moment. Something seems to be stopping you from summoning him as a Caster. (Canon)
Charles Babbage - Wanna pilot a robot? Do it. (Canon)
Wolfgang Amadeus Mozart - Play me a song Mr. Piano Man. (Canon)
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