V. Frankenstein

V. Frankenstein was an author, presumably from Equestria.

History
He wrote the novel How I Did it.

Legacy
During the Second Changeling invasion of Equestria, Twilight Sparkle was shown to have a copy of How I Did It.

Sweetie Belle seemed to be a fan of his works. She used his book, as well as Autopsies for Fun and Profit and Fun with Acids as a source for her Thermodynamics project. Unfortunately for her, the project (literally) blew up in her face, destroying Rarity's room and indeed, a large portion of her house.

Behind the scenes
The name V. Frankenstein is an obvious plan on the literary character, Victor Frankenstein who was the primary protagonist of Frankenstein.