(Do not ask me what all those symbols mean. I have no idea.)
I desperately needed a break from reference sheets, so here's some of my Derpy/Master headcanon.
If Derpy had been human, she would have been a brilliant physicist. Since Equestria doesn't have much use for this, she's a mailmare with "useless" knowledge.
The Master, upon arriving in Equestria, rented a room from Derpy. After a few days of ignoring her affections, he realized she was probably one of the most intelligent ponies he'd met. Enough to somewhat tolerate her as an assistant.
Derpy is happy because not only is this a pony who finally understands her, but he also pays part of his rent in muffins.Questions? Check my FAQ!:[link]Looking for your favourite character? Here's an index!:[link]
Doctor Who (C) BBC
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