This is going to be sooo indepth (because I said, I ramble) but hopefully it'll keep you from doing too much snooping.
Lucy Weasley insurmountablu is one of the sixth year prefects of Gryffindor. Lucy is rather reserved and a bit shy but generally polite to everyone. (Well there are a few people that irritate her but those are usually people she finds to be rude, mean, and/or uncomfortably crude just for the hell of it). She's rather studious (she bribes her friends into studying by offering them lollipops) and also rather well-read. Unlike Theo (coming up), who reads one would say 'for prestige' as much as he enjoys reading. Lucy just REALLY. LOVES. TO READ. She also REALLY. LOVES. TO. EAT. And REALLY. LOVES. HER. RAT. And LOVES. ANIMALS. IN. GENERAL. She's one of the quieter and more responsible Weasleys. Lucy is what one could call a foodie and she'll probably eat anything (she found a boiled sheep head to be rather delicious). And she finds most animals to be adorable (if you didn't catch that by her rat). Despite having a number of friends that she cares for deeply, Lucy can get a bit awkward around strangers but she's been trying very much lately.
-- She would know Leicester because Scor and Dex are two of her close friends. And they share CoMC that they're both real good at. So they'd know OF each other. Tell me what you think. I think it COULD be an interesting friendship but I don't see how it'd go about as she's shy and he keeps to himself in a sense. It could be they got in a debate. Which Lucy can do and does and won't back down from lol.
Maxwell Boot is Max neerdowell. One of the ways to describe Max is to describe the drunken fool in a story or a play. Ridiculous, exaggerated, flamboyent, and most likely thinking about alcohol. Max is a ... knave. He enjoys talking like he's out of a regency book, being a little shit, and flirting with all the ladies. He's not often INsincere but he's very rarely serious. He makes the effort, but it's a matter of it being having done this for a while and it being who he is, of being the Shaggy. Nevertheless, under it he's rather smart. He enjoys woodwork. And he likes people. He also does minimal effort. However, what people don't know is he wants to be an auror and works hard for that (well very, very few people know that). And he's not a bad bloke, just far from the most standup of men. He's also lazy. Max likes what he likes, says what he likes, and often goes after what he likes.
-- Max would the very least know Leicester because of Hailey - who is a childhood friend (they went to the same muggle school). And Phil who is also a childhood friend. So likely whether or not they get on, Max will make his presence known. LOL. I don't see Max having a problem with Leicester but vice versa might not be true.
Addy Goyle problemlikeaddy is a fifth year and the Salem photographer. Comparing her to the paparazzi would be incorrect and not undescriptive. Addy likes taking pictures. Of everything. She's more of a journalist. And in the sense of a scrapbooker, taking piece of every thing because every moment could be important and it's worth chronicaling. She's a new muse that I haven't done much with but she's a friendly sort. Who talks/writes a lot and often forgets her commas. She's from New Orleans which she's proud of - and has an aunt who owns a high-end boutique (that sells lingere) and an uncle who owns a bar out in the bayou. They define Addy more than one would think. She has a sci-fi theory for things - thus far they involve pod people and experiments. She's usually not serious about them. She's meddling and has a strong sense in believing in love.
-- always random interactions. She's probably snapped his picture, whether he liked it or not lol