So long story short, he kills his father when he was 15 and when he was 17 he lied about his age and joined the air force. (no one has wings or knows magic where he comes from. much like earth. and no one has those "cutie marks" and they all wear clothes. So, once again, just like earth) In his 3 years of service, he shot down countless fighters and bombed even more tanks and crap like that and got the nickname Stallion.(He never tell us his real name and to be fair, do you even care?) Even once got shot down and spent a week an a POW camp before breaking out because the tortured him with a car battery and guess what happened. Unfortunately, In his rampage he literally killed everyone and destroyed the camp. By the time he was 20 years old the war was over and he joined his world's equivalent of NASA, spent a year training, and became the 4th "man" on the moon. I don't plan to revel this all in one episode. No it's gonna be reveled gradually through out several episodes. But something go's wrong and they crash land in…um…It's called equstria right? As it turns out, equstria or what ever it's called, is located in Stallion's world's Bermuda Triangle. So, Stallion is the only survivor (of course) ,but he's trapped up to roughly half his forearm in rubble ,so he cut's it off , but not before taking proper precautions (i.e. restricts the blood flow in his arm ,so he won't bleed out and having bandages nearby so when the deed is done ,he can keep all the blood left in his body) And don't worry we'll cut away right before he begins to chop. People who have seen army of darkness know where I'm going with this. Also, by his suggestion, there's a gun in shuttle so he immediately go's for it. Why would you want a pony to have a gun, you ask? So he can do the "this is my boomstick!" speech. And as soon as he gets out of the craft , the main characters come across him and he delivers this epic line: "The world was blue, but there was no god." then he blacks out. That's goin' in the ad. So when he regains conscienceness his first questions are: "1. why is everyone naked? 2. Where the f*** am I? and 3. What the f*** was that? what I can't swear here?" Yes, that's right ,by the rules of equstria or whatever it's called, he literally can't swear it's just instantly converted into bleeps and they're aware that it happened ,so since no one's ever sweared before everyones weirded out by this. I don't know why, but I always imagined Stallion as Bipedal (walks like a human). I think it was so either the audience had more of a connection with him or just so It would look more natural for him to be able to use a gun. Either way, it might not work so well. And since he'd be a bruce campbell character, I naturally leads to him being a cool ladies man. I'm not sure how the age system works in the show, but i'd assume the main character are either young adults or in they're late teens since they have jobs. So, that's an obvious lead to many episodes ,but we all know what it would lead to unfortunately ,but I'm willing to risk it…maybe. Anyways, He get's the robotic arm says "Groovy!" and then he learns more about this strange new world he's in. Soon though he finds out that he can brew beer himself by using the materials on hand. He wouldn't let anyone else have any 'cause he doesn't think anyone here needs any and explains the dangers of alcohol so they can get it past the censors. So, Stallion comes to the conclusion that equstria or whatever, is actually his world's equivalent of Eden. So, decides not to tell his superiors back at his world's NASA (they fix the radio equipment at the end of the episode) because he knows that they will corrupt this paradise. So, he stays in equstria or whatever, destroys the radio and becomes a background character.
Whew! This took forever to type, and if anyone posts "tl;dr" , I'll come over and castrate you with a chainsaw! So, that's my idea, Pretty messed up ,but I intended it as an episode for the bronies. And, hey, more people need to know about Bruce Campbell. And wouldn't everyone want to hear more awesome one-liners! I hope you enjoyed this tour of my insanity.