I just found this web page for AtomicZombie. It’s some sort of Bicycle Builder’s Bonanza (or at least that’s the title of his book).
He builds weird bikes like the world’s tallest bike and stretched out chopper bikes. He also has a recumbent unicycle of sorts. Cool stuff.
The One Wheeled Things gallery has pictures of the somewhat recumbent unicycle. It’s a cross between a recumbent unicycle and a wheelie bike. It shows pictures of him riding it, but I don’t know how ridable it would be.
It also seems the guy is Canadian. Probably from Thunder Bay, Ontario according to his Guinness World Record certificate.