[Warning : Spoilers!] [Scroll down if you don't care about it though, which you probably don't, but, just in-case. XD] I rewrote Xlo's lore anyway, LOL- So, Mars has Lower gravity and pressure and all that, so Xlo's actually Somewhat towers over Mike, and is very skinny due to that as well. Also, she hates Dragonflies, Evan would have probably saw her stomping on whenever she saw one(I'll give you the reasoning at the end.). . . . Yes, she is from Mars...Her specific species is an beta version of the StarPeople(StarPerson?), making her look more like an "average" human, specifically, a Mar-ling.(Made up my own lore for this a bit, like how there are beta versions of the StarPeople and all that as it took multiple experiments to make the true StarPeople after the war between the Marlings and Earthlings.) (Note : Xlo genetically Modified herself to be shorter and look more "Normal" when she came to the 21st century, and yes, from the Fandom I'm using for Xlo's lore, that's entirely normal.) (Xlo's wearing a tradition Robe that the StarPeople wear, which looks wack, but I gave my own take to it.) Here's the explanation, for The Origin/Past Part of the story. Xlo is from the 31st century, where there was a war between the Earthlings and Marlings(They are both people, but has grown to vary due to the different conditions of the planets, also, the terraformed Mars to be habitable.), and after that war, which left millions dead(pretty much a war of throwing machines at eachother.) and cities destroyed, the scientists of both worlds decided to collaborate to make a new generation of humans which wouldn't be opposed to war so such a thing would never occur again, and so the Starpeople were born(fanon part?), but, these took countless experiments to succeed, which included beta-models of these Starpeople, which Xlo was one of them, she inherited mainly Earthling appearance, maintaining hair and all that(haha, Starpeople are bald go brr) but, were Skinnier and Taller like an Marling, with some discussion, she was allowed to roam out into the world, being a citizen of the Capital of Mars. (The main purpose of the Starpeople were to expand Humanity to other planets and all that.) (. . Also she is alive at the point of where the beginning of the first Qu invasion occurs and No, I will NOT explain that, and yes, that's canon. :D) (Fanon/Oc part brr)When she traveled through Time/Dimension hopped accidentally, she had to genetically modify herself to get used to her surroundings, and mess with a few human minds to make her look like she was always there, including her parents, which technically speaking, AREN'T her parents. (As Starpeople are so advanced to the point they can Genetically Modify themselves and can do so many unimaginable things, this should explain how Xlo was able to make a Portal and all that to get the FNaF 4 bullies to Sundown and all that while Mike was in a Coma, and she has even managed to fool Evan about this truth, lmao, because no one needs to know about that one person who came from the 31st century, as she's kind of stuck at the moment. :D ) She can pull off Telekinesis by messing around with Gravitational Fields, and Teleportation by Genetic mutation and with some combination of Super-Advanced technology, as this was an early concept made by the Earthlings and Marlings to put into the original design of the Starpeople, but was scrapped later on. (Xlo burning herself out on making a whole(Fake) life about herself and covering up to everyone about this truth knocks the breath out of her, honestly.) Xlo, now being stuck in the 21st Century, honestly does not mind being stuck here as she has made allies here and there, but she does get homesick sometimes, missing her city and all that. (Sweetie, you don't wanna go back once you learn the truth that the future holds out for the Starpeople, which she has only seen a part of because she saw what happens to prisoners and all that, but only slightly.) (Ps : The entire race of Starpeople gets horribly mutated into twisted and Disturbing species by the QU because QU thinks they should only be able to genetically modify things and all that due to some religious stuff or something, ratherm thinking that they're gods, that Qu only have the rights to do such things, the Qu doesn't even see StarPeople as beings, they see them as objects.) (Xlo hates Dragonflies because they look like the QU, which has started a war against the StarPeople from the last time she saw them, you know, the first invasion.) (>*Xlo vibing as the master of secrets.*) . . . . . I'll let you process what you just read for now. :D
[Scrolling down will reveal which fandom she is in now.] -Starpeople and the Qu are from the 2006 book : "All Tomorrow", which was written by C.M. Kosemen.