Disclaimer: All Transformers characters belong to Hasbro. Any made up characters were created by me.

Summery: (AU; G1) Prowl once trusted the humans long ago. But with the death of Optimus Prime and the remaining Autobots long ago, Prowl started a hatred of humans. Prowl even started to hate himself cause he believed it was his fault he became the last Autobot left functioning.

AN: Gadget, Melissa, and SpeedDemon belong to my friend Hikarigirl18 who help me with some of this fic.

blah – thinking
'blah' – Comm. Specking

The Lone Sentinel
by Yami-Yugi

Prologue

18 years ago

"Prowl, I know you want to come with us," Optimus said as he placed a hand on his second in command's shoulder "But I need you here to guard the base in case Megatron sent some Decepticons over here."

Prowl nods slowly. "Of course, Prime, sir." he said.

"You can still give us militarily advice through the comm. system."

Prowl watched what he seen on the screen worried him. After he gave Optimus a militarily strategy he thought of, something horrible happened. One of Megatron's warriors had planted a huge bomb. 'Optimus, sir!' Prowl called out. Before he could warn his commander, the bomb exploded and thick smoke hinder Prowl's view of what was going on. 'Optimus! Optimus!' Once the smoke finally clears a horrible site meet him. Optimus and the bodies of the other Autobots lied in millions of pieces. "Primus...No..." 'Optimus!'

3 weeks afterwards

Prowl drove through the city, trying to find the Decepticons. Even though I'm just one Autobot... he thought I'm going to continue helping the humans fight against the Decepticons... It took awhile until he finally finds the Decepticons. Megatron and his warriors were steeling energy once again at a near by power plant.

But sadly once Prowl got close enough and transforms, hopefully to take the Decepticons by surprised, he was spotted by Soundwave. "Meagtron. Autobot."

Megatron and the other Deceptions took notice of Prowl. Primus this did not go well...I wish the others were here...

"Megatron it seems we miss one three weeks ago." Starscream said.

"Yes so it seems." Megatron said with an evil smirk.

"It's Prowl...Or is it Bluestreak?" asked Rumble "I always get those two Autobots confused."

"Never mind who it is." Starscream said "Let's crush him!" Prowl growled.

Prowl took out his weapons. "...You are going to pay what you did to the others, Megatron!" he shouted and ran forwards, weapons blazing.

"You think you can defect us?" Megatron laughed "You are just one puny Autobot!"

"I'll die trying!" Prowl shouted.

"Very noble..." Megatron said "Decepticons grant his wish. Attack!" They attacked viciously.

Their shots hit various places on Prowl's body but Prowl stood tall and still fought back. "This is for Prime and all the others!" he shouted as he let his weapons on full power. He took down several Decepticons. But sadly Prowl was out numbered cause many more still shot at him. He was starting to hurt in various places. He decided to take a tactical retreat.

He transforms back into his police car form and started to race away. "He's getting away Megatron!" Starscream shouted.

"Let the Autobot run." said Megatron "He now knows better not to mess with us."

Prowl headed back to base. His whole body ache. I wish Ratchet was still around... he thought I know he would know how to fix me up... Prowl was in a sense tried. He soon found himself in an empty parking lot of a supermarket that was closed for the day. So he deicide to rest there for awhile.

"That one." came a whisper.

"Who would leave a cop car in a middle of an empty parking lot?" came another whisper.

"Who knows. But the big boss would love to tear this one part." Sadly during all this Prowl had fallen fast into a deep sleep mode so he had no clue was going on around him.

"It looks a bit beat up."

"I'm sure the boss wouldn't mind it." The voices snickered. Prowl didn't know the voices belong to some teenagers. One teen had taken this crow bar to pries one of his doors open. Prowl was too deep in sleep mode to even felt this. Another teen began to hotwire the 'car'.

When Prowl's engine came to life, Prowl slowly awoken, but he was half in sleep mode. ...What in Primus...?

"Got it!"

"Let's get going!" Prowl fully awoke when he felt himself move. The other teens clambered in.

"Hey you kids!" Prowl ordered "Get out of there!"

"Huh?" They looked around then shrugged.

"I SAID get out!"

"The cop is back! Floor it!" one shouted and the one that hot wire Prowl press his foot on the accelerator. The 'car' didn't go anywhere. "Come on!"

"It's not moving!" The doors swung open.

"Get out!" Prowl commanded.

"Due what are we going to do?"

"Hey what's this button do?"

"HEY DON'T PRESS...!" Suddenly after the teen press said button, Prowl suddenly went off line and became a normal cop car.

"Yes!" a teen shouted once they started to move again "It must be a special button the cops put so they can move their started cars." The others nodded.

Once the teens, and Prowl, soon arrived at an old abandoned warehouse. "Say boss!" one kid spoke "Look what we found!"

"Interesting... Where'd you find this?"

"It was sitting in an empty parking lot all by it self."

"No people around?"

"Well we thought so..." one started "When we started the car we thought we heard the cop that own it but when we look around there was no one there."

"Ahh... I see..."

"Yeah and when we tried to move it, it wouldn't until Jack press this button..." When the button got press again...

Suddenly Prowl transforms right in font of them looking quite piss off. "What are you humans think you were doing inside me?" The high jackers started shaking.

Their boss just smirks up at Prowl. "Well look what we have here." he started "It's a giant robot. You will make great money for me."

Prowl looked at him oddly. "Excuse me? Giant Robot? I'm not any 'Giant Robot'." The boss just smirks, takes a huge live electrical wire, and jams it into Prowl's chest, since Prowl was bending down cause he was a bit too big for the building they were in. Prowl screams in pain as he fell on his hands and knees. His optics glare at the boss who still smirk at him. "...Why...?" Prowl asked.

"Cause like I said I'll get big money for something like you." Prowl didn't like where this was going. The boss had a grin on his face that Prowl didn't like at all.

"..I-I'm not some thing to sell for money..." The boss just grins again and stuck the wire back into Prowl once again. Prowl couldn't hold back and scream in great pain. He knew if the human did this one more time, his own spark might give out so Prowl knew he had to get out some how. Prowl began to devise a plan that moment. When the humans weren't looking he transforms and hide tail it out of there. His body still ache, and to add to it after what that human did, Prowl was sure his spark felt very weak. Primus...I need to get back to base... he thought No stopping...

When Prowl finally return to base, he weakly transforms back into his bot form and slump up against a near by wall. With what the Decepticons did and what that human did to him, added to his pain. "...And here I thought we suppose to protect the humans..." he spoke softly to himself "...How can I when all they want to do is hurt me as well...?" Oh how he wished the others were alive. Prowl hated any doubts and confusion. He wished his commander was here to get his advice. But sadly Prowl was all alone now on Earth. He almost wanted his spark to go out... But Prowl remember one thing his commander had asked him fore that horrible time, and that was to guard the base form Decepticons. Sure they out number him but he knew he couldn't let his commander down. So Prowl knew what he must do. Even if his spark would go out, he would guard the base.