Glam (now M-21b) was the home planet of Vince Cosmos.

It was a "scarlet and lilac, mountainous world". Vince was taken from Glam to live in East Dulwich at a young age.

In 1979, Vince returned to Glam with Mr Glister after retiring from life on Earth. At that time, the planet had recently been renamed "M-21b" in preparation for it joining the Loose Alliance. Vince performed a purifying ritual at the Mountain of Quo. Iris Wildthyme and Panda approached Mr Glister on Quo and got him to help them obtain the map of Martian souls. (PROSE: Hang onto Yourself)