"That's not the password."

Arthur was in a large cavernous hall. It looked rather blocky and bland. Some of the blocks moved and fired at Arthur. He hid behind a column and looked around for anything useful. A pair of spectacles was hanging on the pillar. He picked them up and inspected them. They looked ordinary enough apart for some etching on the side. He looked closely and could just make out the inscription 3DFX. He put them on and the blocky hall smoothed out beautifully. The bland walls changed to realistically textured walls and the moving blocks became detailed Marvin lookalikes. Arthur was so stunned by the detail that he almost took a hit.

"Hello, we are so delighted to meet you."

"What?" Yelled Arthur.

"It is our pleasure to serve you."

"You were trying to kill me!"

"Well, yes, but it would have been our pleasure to serve you prior to death."

"Do you have to kill me, serving me with pleasure sounds much better."

"That's the rub. We are programmed to serve with a happy disposition and cheery nature. However, the Sirius Cybernetics Corporation miscalculated the demand and have had to stockpile us. We have been asked to fill in here at the induction testing. Not really our forte. Service robots are not great killers. We at least like things to be fair. Three against one is hardly sporting, is it?"

"I may be able to help there," said Arthur.

"Rumplestiltskin," said Ford.

"That's not the password."

"Magrathea rules okay."

"That's not the password."

"Slartibartfast rules okay."

"That's not the password."

"Oh, why don't you get back to your Fjords, you senile old fool and open this door for me," yelled Ford.

"That's the password." And with that the hologram disappeared and the door opened.

Zaphod was walking along a corridor, poised and ready to run at the slightest sign of danger. There were doors leading off both sides of the corridor but Zaphod wasn't trying any. He had his gun held high, pointing towards the ceiling. This looked very impressive and that's what Zaphod wanted, even though he didn't have anything to back it up with.

Suddenly a door opened to his right. His body reacted immediately and he passed out. Ford walked through the doorway and shook his head.

"So you will get the other two and bring them back here?"

"No problem, you just wait here and I will be back as soon as I can. How do I get out of here?"

"Down that slide over there. You will be back soon, won't you?"

"Oh yes," lied Arthur. "As soon as I find the others."

Arthur slipped into the slide, careered down a dark, winding tunnel and through a panel to land at the feed of Ford and Zaphod, who passed out again.

Trillian, Bolo and Fenchurch followed Marvin into the storeroom.

"Should we take any of this stuff?" Asked Bolo.

"It's rubbish," said Marvin. "All of it. You're supposed to stand in the centre of the room and say 'Emases Nepo'." A doorway appeared out of nowhere in the wall, revealing a tunnel.

"That's not logical, is it?" Exclaimed Trillian.

"You should try reading the Sirius Cybernetics corporate policy," said Marvin as grinding gears propelled him through the doorway.

"So the men have gone the wrong way?" Said Fenchurch.

"They can get through another way but that is so depressingly boring and stupid," said Marvin. "Most people go that way. I tried to warn them but they wouldn't listen. Nobody listens to me."

"We listen to you," said Bolo. She had studied mechanical stress and depression briefly as part of an engineering degree she kept very quiet about. "We will follow you as well and do what you want...." She looked at the others. "Because we respect you and your opinions. Trillian had told me of your achievements and you deserve recognition."

Marvin stopped walking. He also stopped the calculation of retrospective analytical data on predictive inverted ancestry of an ant he had stepped on one million, two hundred and thirty one thousand and two years ago (a task he had undertaken to relieve the boredom before taking the next step). He concentrated his considerable mental abilities on Bolo's words and however hard he tried, he could find no trace of sarcasm or insincerity. He ran it through one more time. The girls waited.

"Who am I?" He said.

"Marvin," said Trillian, confused.

"That's all the recognition I've ever received and all I deserve," said Marvin and trundled off down the tunnel.

"Worth a shot," said Bolo.

"Nice effort," said Trillian. "I thought you had him for a second." They chased after Marvin.

"This next room is one of the programming rooms, " said Marvin. "I need to interface with the initiative test computer to find out where the others are. Don't get into too much trouble."

The room they entered wasn't like an aircraft hanger. Aircraft hangers had a cosy, intimate feel compared with this room. Thousands of desks filled the room in perfect symmetry and behind every desk sat a programmer, each busily keying into a terminal built into the desk. The ergonomics of the room were appalling due to the fact that the recently formed Department of Ergonomic Consideration had to be disbanded after a week because the cleaners wanted their broom closet back.

The perfect symmetry was broken by one programmer who stood up as he saw Marvin go into the little robot's room. The programmer waved at the three girls and they made their way through the desks until they finally arrived at the desk of Percival Unha.

"I'm Percival Unha," he announced, picking up a nameplate from his desk bearing the inscription 'UNHA P.' . "See? Do you know that robot, the one that went in the interface room?"

"Yes, he's with us," said Trillian. Percival's voice sounded vaguely familiar to her.

"What's his name?" Asked Percival. His voice had all the tonal qualities of a bored foghorn.

"That's the second time we've been asked that," said Bolo. "It's Marvin."

"That's all the recognition he deserves," moaned Percival. The girls looked at each other, stunned. "I programmed that robot. I built part of my personality into it. Is he a jolly robot?"

"Not really," said Fenchurch. "Not much of the time. Well, to be perfectly honest, never really."

"Not surprising," said Percival. "I'm not what you would call a bubbly person myself. I was having a rough time when I was programming it. I had one of the first sex cybernauts, you see. My android replica was playing up again, it's no joke. I was terribly, I don't know, pissed off with the whole thing. My heart wasn't in it."

"That explains a lot," said Trillian. "Your robot has taken depression to new depths."

"I would really like to meet him," said Percival. "I never met him after initial programming, he was whisked away to serve on a new ship, the Heart of Gold."

"I'll get him for you," said Bolo, running off to the interface room.

"I never thought I'd get this opportunity," said Percival. "We don't get to see any finished products. It was a shame I wasn't a bit more cheerful when I did Marvin, but I only recall being cheerful once, and I didn't waste that on a stupid robot."

Bolo brought Marvin through the desks to Percival.

"Marvin, this is your creator, Percival Unha," said Trillian, proudly.

"Daddy?" Stuttered Marvin.

"Marvin," said Percival.

Marvin moved forward and embraced Percival. Tears welled up in everyone's eyes. Marvin gripped Percival tighter as Percival sobbed on his shoulder. It may have been a trick of the light, but Trillian was sure she saw a smile on Marvin's face, just before he sent fifty thousand volts through Percival.

"That'll teach him to fuck around playing God," said Marvin as he trundled through the smouldering mess that was once Percival.