One shot I wrote where Gordon is out to get everyone one Halloween, from a mini fic called This is Halloween.

Alan rolled over onto his back as he felt the morning creep into his room, he opened his eyes wearily only to find himself looking straight into eight pairs of eyes. With a yelp of terror, he curled himself into a ball and fought the urge to call for Scott, then he focused on what had scared him; a rubber spider.

Downstairs, Gordon grinned, he had heard the petrified scream from his youngest brother, "one down, three to go."

Alan ran into the room and launched himself at Gordon who threw a cushion in defence winding him, "Gordon!" He coughed.

"Good morning Sprout, sleep well?"

Alan looked up from the floor. "You jerk. What was that spider for? You know that I'm afraid of them."

"Happy Halloween," Gordon smirked. "May as well start early."

"It's not even nine in the morning, Gordon!"

"What have you done with it?"

"It's happily sitting in my bin."

"The bin? Aw Alan, that spider wasn't cheap, y'know?" He moaned.

"What spider?" Scott asked as he entered the lounge.

"Gordon pranked me, and he knows that I'm a…Well, I don't like them."

"Ah. I did wonder who screamed just now. It rang around the house like a bell," Scott laughed then looked up to John's portrait as it flashed. "Morning John. A situation?"

"Bingo."

"Location? And please don't say Transylvania or somewhere. You know I don't do Halloween," Scott crossed his arms which made Gordon smirk.

"No, but the call did sound rather strange, it was very broken up."

Scott nodded. "Alright. Virgil and I will check it out. Where is he anyway?"

Gordon shrugged. "I haven't seen him all morning. Have you checked the hangar?"

"John, could you scan the hangar for me please?" Scott looked up at John with a smile.

"FAB," John turned away for a second, then laughed. "I've found him, he's down in Thunderbird 2's hangar."

Scott smirked. "I'll go and get him. If you can John, get in touch with the caller and tell them we're on our way."

"FAB."

Gordon watched Scott leave the lounge and laughed to himself, soon his older brothers would get their taste of Halloween, "I'll see you later Alan."

"Where are you off?"

"I have some calls to make," Gordon stood up.

"Say no more," Alan made a face as he pictured his brother chatting up Lady Penelope.

"Choi!" Gordon grinned and went to his room to begin his next prank.

Scott walked into the vast hangar and looked around for Virgil, he was about to check the cockpit of Thunderbird 2 when he heard a loud thump from inside one of the modules. He walked up the ramp of number 5 and chuckled. Virgil was standing in the middle of the floor holding his electric bass, tapping heavily on an effect pedal under his foot.

"Virgil?" Scott called, but his brother didn't hear him. "Virgil!" He sighed and walked over to the amp, he pulled out the cord and fought the urge to laugh as Virgil cursed, "hey Virgil?"

"Ahh!" Virgil yelped as he jumped a foot into the air. He turned around and faced Scott. "Geez Scott, you could've just called me?"

"I did. Twice. Pack it up, we have a situation."

Virgil lifted the guitar over his head, "what's the problem?"

"John has picked up a distress call not far from us, practically on the mainland. Get ready to launch."

"Which module?" Virgil led Scott down the ramp, and the module door began to rise slowly behind them.

"Take number 2, just in case we need to assemble vehicles. See you in the sky."

"FAB."

"Oh, and Virgil?" Scott looked back from the metal staircase leading to Thunderbird 1.

"Yeah?"

"Nice playing."

Virgil smiled back as he watched Scott leave before he ran upstairs to suit up and enter his 'bird.

Thunderbird 1 and 2 took off, and Gordon tracked them on his computer. Around him were various consoles and blueprints. The journey wasn't long and he pressed a button which created a fog, and he put on a headset to listen to his brothers talking.

"Thunderbird 1? Suggest we land and go in on foot, visibility is very poor."

"FAB Virgil, following you down."

Gordon propped his feet up on the desk and waited for his brothers to approach the situation he had created, he watched them walk through the park and pressed play on a recording device.

"Is someone there? Help me please!"

Scott grabbed Virgil's arm a little too hard, "hold up. Did you hear that?"

"One, ouch. And two, yes. It came from over there. Is that a well?"

"Virg? Shine your torch down there."

Gordon lifted the headset off, "that'll keep them busy. Time to put operation Halloween into action." He got up and made his way to the lounge taking a small box with him.

Alan looked up at Gordon as he walked through the lounge, "so, how's Penny?"

"Penny? Oh, oh yeah. She's fine," he walked over to the piano and opened the lid. "This will do."

"What are you doing, bro?"

"Never you mind. But I'd appreciate it if you didn't tell Virgil I was over here."

Alan raised his eyebrows, "alright, but you're acting really weird."

Gordon closed the lid, "Al, could you get me a post-it note, please? I think they're in the kitchen."

"Get it yourself."

"Please Ali?" Gordon begged. "I'll tell you what I'm doing."

"Tell me what you're doing first, then I'll help you."

Gordon sighed. "Fine. Basically, when Virgil comes in for his evening practice, I've programmed the piano to play by itself."

Alan laughed. "You're cruel. He's going to have you polishing those keys for a month."

"He doesn't let me polish it, not after the job I did on it last time."

"He'll make you tune it then."

"I can't tune a piano...But I can tune a fish!" Gordon grinned and Alan shook his head. "What?"

"I'll leave you to it. A post-it note you say?"

"Yes please," Gordon pressed a button and watched the keys move. "Awesome, it works. Ooh, better check up on my fake rescue. Alan!"

"Yeah?" Alan called back.

"Bring the notepad to my room please!" Gordon went back to his room and checked the monitor. "Excellent."

Scott lowered a rope down the well, "grab hold!"

Gordon controlled a grab from the tape recorder to attach to the rope for weight, then clicked a button to alter his voice. "Oh thank you so much."

Alan knocked and walked in with the pad, "here."

Gordon hit mute quickly, "thank you. That's Plan B. Now shoo, I don't want you learning all of my pranks."

Alan rolled his eyes, "fine. I'm going."

Gordon waited for Alan to leave, then got up to run to Scott's room, he looked around and spotted the item he was looking for, "there you are." He took down a cookie jar and went back to his room to watch the finale of the prank. "Just in time."

Virgil helped Scott pull the rope up, but then with a cry of dismay he saw what they had pulled up, "what the hell?"

Gordon linked himself up to their channel as he prepared Scott's prank, "are you guys okay?"

"Gordon, what is the meaning of this?" Scott narrowed his eyes at the voice recorder in his hand.

"Just some fun. Got you good though."

"Gordon that was a sick prank, and not in a good way. What if that had been a real boy down there?"

"Then the original call would've had more story to it then, wouldn't it?"

"You better start running Gordon, 'cos when we get home, you're dead," Virgil's voice lowered angrily.

Gordon shrugged. "See you later then," he turned back to the jar, and hidden under the cookies he buried a mechanical hand which would grab Scott's hand when he went in for a treat, he smiled as he turned it on and took the jar back to Scott's room before returning to the lounge to wait for the eldest brothers to arrive home.

Scott landed Thunderbird 1 and entered the lounge angrily seeing Gordon, his hand went straight to his chest but the prankster simply yawned.

"Gordon, you are in so much trouble. You wasted our time going out to save a voice recorder when someone could've actually needed us!"

Gordon pushed Scott back, "oh grow up. It was just a Halloween prank."

"I don't do Halloween," Scott hissed and Alan raised his eyebrows.

"Scott, let go of him," Virgil stood at the entrance to the lounge. "Why did you do it, Gordon?"

Scott tapped his foot impatiently as he waited for Gordon's explanation, "I only wanted a laugh." He whined. "What don't you guys find funny?"

Scott sighed. "It goes back to one Halloween when we lost a victim on a rescue, and it's haunted me ever since," he collapsed onto the sofa.

Virgil sat down at the piano and Gordon couldn't help but press the button for the player-piano to start without anyone seeing him. "Umm, what's going on?" He looked down at the keys moving by themselves and sat back on the stool, "what's doing this?"

Scott looked over, "Virg, if you're going to play, turn off that CD."

"It's not a CD. It's playing by itself."

Scott walked over and watched the keys, "Gordon? Can you explain this?" He asked, looking back at the aquanaut.

"No. What's going on?"

Virgil shook and moved closer to Scott, "it won't stop."

Gordon burst out laughing and took the button out of his pocket. "Ha! Your face is a picture, Virgil. I really wish I had got a photo of that."

Scott rubbed Virgil's shoulder, "very funny, Gordon."

Virgil stood up. "That's the last time you sabotage my piano, Gordon! If you so much even go near it, I'll be onto you."

Gordon gulped. "Happy Halloween?"

"Not this year," Scott marched off to his room and Virgil ripped the prank out of the piano so that he could play properly.

Gordon followed his eldest brother to the rooms and went to his, as he was unplugging the devices to the earlier prank he heard his brother singing in his room and the sound of a jar being taken off the shelf.

"Uh oh," Gordon ran to the door and poked his head into Scott's room.

"Getting a cookie," Scott sang and he put his hand in, the mechanical robot hand latched itself around his hand and Scott let out a scream. "Oww!"

Gordon laughed. "Happy Halloween!"

Scott looked around, his eyes blazing, "Gordon!"

"Yep. I'm going."

Scott tore his hand out of the jar and ran after Gordon, he tackled him to the ground and attacked him with tickles, "that's for sabotaging the rescue. And this is for that hand!"

Gordon struggled against the tickling and prodding, "let me go! I'm sorry okay?"

"How come John didn't get pranked?"

"He's in space," Gordon coughed. "Please stop tickling me!"

"Only if you're really sorry?"

Virgil and Alan came around the corner, and Alan laughed at the sight of Scott on the floor with Gordon, "what's going on?"

"This little brat put a mechanical hand into my cookie jar," Scott pinned Gordon down.

"You have a cookie jar?" Virgil asked.

"Yes, and it's mine," Scott growled playfully.

"Get off me! It was only a prank."

Alan jumped on Scott with a laugh and Virgil decided to join in too. Scott yelled as the body of his heaviest brother came down on top of them and Gordon grinned before hugging all of his brothers.

"Happy Halloween, guys."

Alan smiled. "Happy Halloween."

Scott sighed. "I guess it was a little bit funny."

"You're allowed near the piano if you want, Gordon," Virgil smiled as he sat on the floor surrounded by his brothers.

"Thanks, Virg, and I'm sorry."

"Forget it. Who wants a Halloween party?"

Alan grinned. "Me!"