Michael Howe
Michael Howe, corrupted to Mygal (/'miːɡəl/ MEE-gul) in the Oburron and Jenner paracosm, was a London Underground driver from 21st century Earth who ended up being transported to the era of BHH in the Earth's far future, and Michael's fleeting key in Evon and a Human, probably based on his earlier fleeting key in "the game" and later preserved in the lore of the Oburron and Jenner paracosm as a minor character. Michael (the character) drove Picadilly line trains on the London Underground in the early 2010s. He was transported to the far future, by which time the universe was known as Oburron, where he met Ciarraí Evon.
"Michael" is Michael's real-life first name; the surname "Howe" was chosen because it sounded like the word "how?", referencing both the character's 'impossible' backstory and his inquisitive attitude to the workings of things.