Join Mark, Jon and Danny as they saunter into the Z section of the Hitchhiker’s Guide to the Galaxy.

The place Zaphod and Roosta transport themselves to is the Wormhole Disco, which might as well have been called the Placeholder Club. In this disco there are nozels on the wall that spray the smell of hot sweat over everything, and the place is packed with dancing robots.

Wowbagger the Infinitely Prolonged was – indeed, is – one of the Universe’s very small number of immortal beings.

He’d had his immortality thrust upon him by an unfortunate accident with an irrational particle accelerator, a liquid lunch and a pair of rubber bands. The precise details of the accident are not important because no one has ever managed to duplicate the exact circumstances under which it happened, and many people have ended up looking very silly, or dead, or both, trying.

He was played by Toby Longworth in the radio series, and he’s made it his mission to insult every little being in the universe, just for something to do.

The Xanthic Re-Structron Destabilised Zenon Emitter is just one of those throwaway lines Adams tossed in to a conversation between two robots. But if you put that combination of words into the Internet, you get this interesting question, which I’m going to pose to Danny:

Ysllodins is the star around which most of the Galaxy’s major insurance underwriters live, or rather lived. As far as I can tell, this one isn’t real.

Zamphuor is an unknown ingredient to add when mixing a pangalactic gargleblaster.

The Zansellquasure Flamarion Bridge Club from beyond the Vortvoid of Qvarne is a party that dines at Miliways, the restaurant at the end of the universe.