Sonic, Tails, Knuckles, and all other related characters are © SEGA. (Short disclaimer :P)

Holes and Tricks
An Adventure with Knuckles the Echidna
Part 4

Two days later, Amy was back in the apartment and knew that Sonic really did love her, after a rather short explanation. We had now devised a plan to break into Eggman's base. After the plan was all worked out, the pink hedgehog fixed up the worn spots on the Piko Piko and had equipped one side of the mallet head with a metal spike to help make quick work of the semi-robotic clones.
"All right, everyone. We know how we're going to get inside the base; I saw plenty of ways to get through to where the clones are when Eggman was temporarily holding me hostage. Now we just need to get in there and destroy these fake hedgehogs and bat!" explained Amy as she hoisted the Hammer up into the air so that the spike glistened in the light of the apartment. As everyone sounded their approval, I could just barely hear Sonic whisper, "That's my girl," as a grin crept across his face.
"Think we'd be able to sneak in a couple attacks while we're there as revenge?" asked Shadow, who was tracing the outline of his Flame Bracelet as he spoke.
"Why not," I put in, "since we do owe Eggman a little payback."
"Alright, then let's get going!" exclaimed Tails. Everyone nodded in approval to this, and we all headed for the apartment door, ready for the fight that was yet to come.

Fifteen long minutes later, we were hovering outside Eggman's base.
"I'll get the vent open; you guys just wait for a minute. Then we can give Eggman the welcoming gift he deserves." I said with a little grin, holding up one of my razor-sharp fists for my friends to see. After a quick moment passed by, I jammed both of my fists into the metal grating that blocked our entryway and gave a few light tugs before it came loose from it's holding place against the wall of metal.
"Alright, Knuckles! Now just set that thing down on the floor of the vent and we'll follow you in." The orange fox looked at me with a confident smile as he said this, letting me know he was ready to help out. Tails then hovered the aircraft over to where a couple of its arms could grab a hold of the other side of the grate.
"Alright," I said, "on three. One… Two… Three!" And as soon as the last word had come out of my mouth, the Tornado and I had lifted the metal grate into the vent and set it down with a relatively soft 'clank'.
After that task was completed, Tails hovered (or flew) the aircraft into the vent and morphed it into what he liked to call "mech mode". Everyone aboard the quickly and quietly hopped out of the now-mech (except for the fox, of course; he was the only one who knew how to pilot it).
"Okay," spouted Amy as soon as everyone was attentive. "First things first, we have to go into the heart of the building and destroy those clones. After that's taken care of, we have to destroy the equipment he used so we can be sure Eggman won't try it again. After that, it's just a free-for-all to see who can destroy the most machinery." The pink hedgehog had a wide grin on her face as she added the latter, causing Sonic to bear an evil grin as well.
"Sounds like a good plan to me," stated the blue hedgehog, still wearing that mischievous grin on his face. "So, shall we continue on?"
"Why wouldn't we?" inquired Rouge, who had finally spoken since we had left the apartment. "After all, we are here for a revenge of sorts. But this time, we'll give Eggman a little more than what he deserves." The white bat had an almost fierce look on her face as she said this.
"Right," said Shadow, wearing a grim look as he spoke. "Now, let's get a move on; if we wait any longer, Eggman's bound to find us here."
So with that, we all started on the move again, under the direction of Amy (remember; she was the only one who knew where the clones were being held). We were still traveling through the air vents with the pink hedgehog peering through a grate every now and then just to make sure we were still on the right track.
"Okay," whispered the pink hedgehog, "we're right above the holding cells for the imposters. Knux, time to rip out another grate."
Without saying anything, I gave a slightly annoyed look in response to Amy's statement and jammed my fists into the metal. Twisting my knuckles slightly, I wrenched the grate free of its holding place and began to set it down on the floor of the vent. Before it got too low to the ground, though, something flew up and pushed me back, grate still attacked to my knuckles. From the scream that erupted from Amy's mouth, I knew that it was her clone.
I then heard a large thumping noise and a grunt as the clone flew back out of the vent, complete with a brand new gash on her face from the newly-installed spike on Amy's mallet.
By this time, everyone else had fled the vent, while I still had the grate attached to my knuckles and the authentic pink hedgehog was in the process of escaping the small metal shaft.
Then, the fight between each set of original and clone began.
Right as I had set the grate down on the floor of the vent to free my fists of their prison, I heard the sounds of violent fighting begin. I knew I had to get down there to help everyone, but it would be more than a little difficult to safely glide down to the ground with a twenty-some pound steel grate attached to my hands. I then began to twist my knuckles around in the metal, and soon my fists were free. Immediately after, I just in the air and spread out my dreadlocks and arms and started a slow descent down toward the ground.
When I landed, I was nearly disgusted at what I saw.
Each set of fighters had a few gashes and bruises here and there, but other than that, both the clones and the so-to-speak moulds were blocking nearly all attacks. I didn't know about the copies, but if the fight kept up like that, the original furries would become worn out and eventually be beaten.
When I broke out of my train of thought to go and help my friends, I finally noticed the cluster of fifteen RoboKnuckles surrounding me.

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"Oh, great," I muttered as each slightly-outdated robotic version of me took up a defensive fighting stance. "So, you little pipsqueaks want to fight with the original Knuckles? Well then, you better have brought your can of WD-40, 'cause I'm about to clean you guys up good!"
I then heard one of the closer imposters yell in an electronic 'language', and then four others came forth with the so-called ringleader and began to attack me. I immediately sprung up into the air and dove right back down, fists first and spiraling to perform Drill Claw. Fortunately for me, these 'bots definitely weren't fast learners and every single one of the five was standing directly where I was aiming to hit. With an electronic wail, all five fizzled out of working order as my razor-sharp knuckles penetrated their metal casing and wires. I got a slight electrical shock from it, but it didn't bother me much.
The remaining RoboKnuckles screamed at me for the companions I had just put out of order. Before they could start to attack though, I jumped high in the air to glide around and see how everyone was fighting.
It was then that I heard a fierce cry from on of the Amy's and a blood-curdling scream from the other. Right after, Sonic's voice could be heard screaming the pink hedgehog's full name.
Concerned, I glided over to the battle area and found it rather relieving from what I saw, despite the goriness. The real Amy was standing over her clone's body, seemingly just staring at the open wound on her chest from the spiked mallet head.
"One down, two to go, I suppose," I stated as I continued to look on at the growing puddle of blood surrounding the duplicate female hedgehog's body, which was also shorting out the mechanical arm. "Too bad I didn't get to see the fight."
"I noticed your little party over there. I would have gone over to help you, but Tails and I have been dropping in on each fight once in a while just to buy our guys a hit." The blue hedgehog gestured over to the remaining two fights, the up toward the ceiling to where Tails was hovering his mech.
"No big deal," I said in response. Then I turned to Amy, who was surprisingly silent, and said, "Amy, I want you to go and help Tails, Shadow, and Rouge while Sonic and I clean up those bolt-buckets over there. Got it?"
"Alright!" exclaimed the pink hedgehog as she turned away from Sonic and me.
"Knux, I just have one question before we go and smash those guys," said the hedgehog. "You didn't use the WD-40 line, did you?"
To answer his question, I glared and cracked my knuckles. He then groaned and rolled his eyes before heading toward the remaining ten RoboKnuckles. I followed suit and within seconds, the area was filled with the sound of metal smashing and circuits frying.
"Well, that wasn't so hard," I muttered as I looked over the heap of scrap metal and wires that Sonic and I had created.
"Definitely easy. It almost makes me wish there were some stronger… Oh, boy." As the blue hedgehog stated the latter, he lifted his arm and pointed behind me.
When I turned around to look, I saw what I never wanted to see.
Rouge was backed up against the wall, while her duplicated had gotten a hold of Amy's hammer and was about to smash the only woman I ever had feelings for to pieces.