Aaaaaaaaah next time I need to use a simpler, far less complicated powerset. D: But here we go.
Name: Hans Christian Andersen (Caster)
Gender: Male
Appearance: Third-rate Servant, Andersen. Due to his Innocent Monster trait, he not only takes the appearance of a child (despite still having a deep, mature, masculine voice), but his legs are dotted with patches of what look like fish scales and his torso has various burn scars and frostbite marks across it.
Personality: Andersen is blunt, cynical and not afraid to speak his mind at all, often pointing out the flaws and failings of others. Despite his harsh tones, however, he's not actually malicious; due to his Human Observation skill he easily understands the flaws of others, especially himself. He outright states himself to be "third rate" and "ordinary", a useless Servant with no fighting ability. Dour and pessimistic, he doesn't even try to get people to like him, and tends to complain and show little joy in anything other than his writing and drinking. Despite everything, however, he does not hate or judge optimists and idealists, and whilst he openly disparages the idea of "true love" it mainly stems from how lonely he was in the end. It's possible that the reason he was summoned with a child-like body is due to a deep subconscious wish that he could return to the innocence of youth, but despite this he has no real wishes; he gave up on all of those when he was still human, after all.
Brief History: The famous Danish author, considered to be one of the greatest writers of fairy tales and children's stories in history. His previous life as a human, one almost as tragic as the tales he wrote, is well documented, but due to his fame and reknown he ascended to the Throne of Heroes upon death and became a Heroic Spirit. He doesn't seem to like talking about the first time he was summoned as a Servant, aside from it apparently being on the moon in an alternate future to a Master he has nothing but harsh words for. His second (and current) summoning was to an inexperienced young mage of Chaldea, an agency dedicated to ensuring the prosperity and survival of humanity, and despite his cynical tone he is far happier with this arrangement.
Universe of Origin: Fate/, Nasuverse
Equipment: Andersen carries his Noble Phantasm, Märchen Meines Lebens: A Story Just For You, a book representing the unfinished manuscript of Andersen's autobiography. Whilst the book allows a non-mage like Andersen to utilize magecraft, its true power is rather more complex. By writing down observations of a person and what their ideal life would be into the book, Andersen is able to raise them into "a single leading character", increasing their capabilities and abilities and transforming them into an idealized form. To utilize this power, he must first wipe the book clean and begin rewriting from the beginning. How much growth the subject recieves depends on how far the manuscript progresses; writing a few pages will result in only small increases in parameters and abilities, but filling out the book and finishing the manuscript will turn them into the protagonist of a story centered on themselves and transform them into their highest ideal form. The quality of the work is also a factor, and depends on how much interest as a writer they can arouse in Andersen; supposedly, he could use it to raise someone up into a demon god if given enough inspiration and time. However, therein lies the catch; whilst Märchen Meines Lebens may initially seem like an omnipotent, reality warping artifact, it is actually very difficult to rely on not only because of how Andersen actually needs to take time to write a story in it (although his High-Speed Incantation skill does vastly increase his writing speed) but due to how it relies on Andersen's pride as an author. Not only does he run the high risk of being hit by writer's block whilst working on the manuscript, but his gloomy and negative view on life means he finds it difficult to actually write out someone as their idealized self; his personal dislike of such convenient developments and his belief that things will never go so well or so easily coupled with the fact that he has to actually be interested in the subject means there is a high risk of Andersen considering what he's written to be a poor piece of work and losing interest, thus negating most of the intended effects of the Noble Phantasm on the subject.
Abilities: Unlike most Caster class Servants, Andersen does not possess the Territory Creation skill. His Item Construction skill alongside his Noble Phantasm allows him to produce items that can be found in his stories, and his High-Speed Incantations skill allows him to write far faster than a normal human would ever be able to. His Human Observation skill allows him to quickly understand others, even if being a cynical pessimist he tends to focus mainly on their flaws. Thanks to his Noble Phantasm, he is able to cheat his way into using basic magecraft despite not actually being a mage himself. Due to his childlike body and the fact that he was never much of a fighter in life, his physical capabilities are negligable.
Other: Whilst he was at Chaldea, Andersen served the same Master as a certain traitorous knight.
And I guess I'll drop Franky then since she wasn't working out too well anyways.
I kind of need to keep Bethany though since she's my only character now and we need her for Arturia yuri even if she's been a bit of a pain to write but um yeah.
Pairing up Masters and Servants at random doesn't really make sense in any grail war, honestly, since either catalysts are used or someone is summoned who best matches their Master.