Half-sane protagonists! Discord! Trolling Pinkie! All around crazy! Goddesses, it's good to be random.
An odd unicorn has some crazy fun in and around Ponyville. His companionship with Discord causes some chaos in and of itself, and his personality threatens to out-random Pinkie AND Discord. So why can nopony say where this enigmatic and unstable pony lives? His home ought to be a known hazard, so where is it? Why is he never seen anywhere except causing trouble? And who has been leaving Princess Twilight fan mail?
EDIT: Apparently, my muse wants Spark's backstory to be seriously emotional. Do not read chapter two if you are allegic to sudden seriousness and very saddening moments.
*Disclaimer: This is written based on the decisions of my muse. Sudden changes in mood are to be expected.
Well that was
dumb.weird
4000661 That's the idea.
"Scan me." I recognise that from a video game, though the name eludes me. Either way, a trip worthy of Wayne and Garth, Good Sir(?).
4003282
Thank you. And yes, 'sir' is the correct term.
Him. Well, now that I've finally gotten a chance to read it, I'm not sure what to say about it. It's an enigma. It's very written-by-the-seat-of-the-pants, with the humour being... Honestly a little bit lackluster, and nearly forgotten about after the first half. Spark... He'd be an interesting character, had you perhaps not tried so hard to make him interesting, and yet... He's not quite insane enough, if you catch my drift. He's too coherent, except when he's not. I do like how you've established almost everypony's positions on Changelings fairly quickly, but Twilight jumps straight into "scan brain for secret evil plan" as opposed to "see if any pony knows this stallion/drone and whether he's telling the truth about not having replaced Somepony".
Honestly, this story... It's not quite wacky enough to be called a crackfic, but it's clearly not meant to be taken seriously. Apologies for that, incidentally. Still, this sits in that bizarre medium of the drunkfic, but without the alcohol required for that. It feels like you're trying a bit too hard, really. You have a concept that sounds interesting (I'm all for looking into the mind of a crazy pony/changeling) but at this speed, we'll have reached that point before we're even 2000 words in, when your character's character hasn't yet been established.
I get that you didn't really want this story to be taken too seriously, but it sits in this awkward place where you're trying to write a running story without even trying. Crazy, barely-sensical little one-shots are good, as long as they're funny. But this, I'm sorry to say, just feels a little lazy.
On a lighter note, you're writing! This is good! Practice makes perfect, everyone knows that, and there isn't a writer in existence who lacks a folder full of their less-than-amazing stories. If you ask, I'll send you a couple of my own, and we can chuckle about them together. But, finally, I think this story thus far can be best summed up by the chapter's title, and perhaps a quick question:
"Sir, you know how fast you were going when you overtook characterization on the plotline and rear-ended the chapter?"
4010136
See, It all goes at a decent pace while I'm writing it. Then I finish and look back and it's doppler-shifted clear into the blue by how fast it zings by. And yes, this is an experiment in writing LITERALLY everything about the story that comes into my head. I noticed the plot holes, but even the narrative is supposed to be a bit unstable.
Finally, this is mostly to get Spark to stop banging on my frontal cortex. I may go back and fix some things. Thanks for noticing the whole coherence/craziness dichotomy. In truth, his insanity was mostly a manufactured defense mechanism, to distract him from his crushing despair at being severed from the hive. All that will be at least somewhat explained whenever I can write chapter two. Thanks.
4010187
Well, okay. If I may suggest a mental exercise?
Put yourself into the mind of someone who's just found this story on the front page, and is reading it, with no idea of where it's going or who anyone is. Having a character with a mysterious past is all well and good, as long as you give the readers something to hold onto in the meantime. Even if he's crazy, he needs to be relatable somehow, even if it's just to show later on how truly crazy he is.