Well, a lot of his clothes I kind of based off of that of his ancestor, Destati Allan-Markes Nevermore...the first original Kingdom Hearts character I ever created, and the main character of my KH fanfic,
"Breakdown", which I started writing ages ago and is kind of horrible...Well, the first few chapters are, anyway...Destati usually wears a band tee, black jeans, a red bandanna, and a long-sleeve blue jean jacket which he hardly ever takes off.
Allie's vest was heavily inspired by Locke Cole, one of my favorite characters ever. It's basically...Taking Destati's jacket and cutting off the sleeves, then putting zippers instead of buttons for the front pockets just to make it more KH-ified. And the pants...well, they're jeans. With extra pockets. Woohoo. And the cut-off zippers below the knees were kind of inspired by Tidus from FFX. As for the bandanna, I just switched the color from red to black, because Allie's hair is already reddish, so adding a red bandanna would kinda throw off the color balance.
The medallion...That's just a normal thing on his homeworld, Uisce. I came up with that because...well...because I'm obsessed with Leviathan XD
The chains on the beltloops....that's 100% Sora-inspired. Except they're regular chains, no fancy design. The half-finger gloves....That's kind of a recurring thing among many of my characters' clothing designs. I don't know why. It's been like that for years.
Aaaand....I think that's it.
O.o Sorry for rambling, I kind of get fired up and stuff when talking about my creations...