IV
"Yeah. Listen, I'm Zaphod Beeblebrox, my father was Zaphod Beeblebrox the Second, my grandfather Zaphod Beeblebrox the Third..."
"What?"
"There was an accident with a contraceptive and a time machine. Now concentrate!"

Tricia McMillan is a brilliant mathematician and astrophysicist whom Arthur Dent attempted to talk to at a party in Islington. She and Arthur next meet six months later on the spaceship Heart of Gold, shortly after the Earth has been destroyed to make way for a hyperspace bypass. Trillian eventually left the party with Zaphod Beeblebrox, who's directly responsible for her nickname, and for her survival.

II
Grunthos the Flatulent was the poetmaster of the Azgoths of Kria, writers of the second worst poetry in the universe, just between Paula Nancy Millstone Jennings and the Vogons.

The guide recites a tale of how, during a reading of his poem "Ode to a Small Lump of Green Putty I Found in My Armpit One Midsummer Morning", "four of the audience died of internal hemorrhaging and the president of the Mid-Galactic Arts Nobbling Council survived only by gnawing one of his own legs off."

II
An enterprising chap who addressed the problem of elevators refusing to operate because they had been afforded a degree of prescience (to facilitate their operation by allowing them to be waiting for you before you've even decided you want to go up or down a floor) but consequently became terrified of the future, and so taken to hiding in basements. Mincefriend became very wealthy when he patented and successfully marketed a device he had seen in a history book: the staircase.

II
The Vogon Captain in charge of overseeing the destruction of the Earth, Prostetnic Vogon Jeltz is sadistic, even by Vogon standards. When not shouting at or executing members of his own crew for insubordination, Jeltz enjoys torturing hitchhikers on board his ship by reading his poetry at them, then having them thrown out of an airlock into open space.

The creator of the universe, according to the Jatravartid people of Viltvodle VI. Their legend has it that the universe was sneezed out of the nose of the Great Green Arkleseizure, and they thus "live in perpetual fear of the time they call 'The Coming of the Great White Handkerchief.'"

V
In contrast to most other immortals, Bowerick Wowbagger was not born one, but became immortal due to an accident with "an irrational particle accelerator, a liquid lunch, and a pair of rubber bands". Unlike other immortals whom he calls "a load of serene bastards", he doesn't cope very well with his infinite life, having particular problems finding something to do on Sunday afternoons. Eventually he comes up with a plan to keep himself busy: he will insult every single living being in the universe - in alphabetical order.

Known as "The Triple-Breasted Whore of Eroticon Six", some people say her erogenous zones start some four miles from her actual body. Ford Prefect disagrees, saying five.