What time is it? Adventure Time!
Hat & Backpack: It’s actually pretty darn easy to find a perfect replica of Finn’s hat. Here is one such example that I found but it’s possible to find a Finn hat nearly everywhere. There is even a hat and backpack combo that I found on Etsy here! I personally prefer this backpack however, which is below. Either way, I would stuff the backpack full to the brim with all sorts of stuff you might need for the convention so that it looks full like Finn’s. Might as well be practical about your cosplay, right?
Shirt: The shirt is another fairly easy find. A simple lighter blue t-shirt is all you should need. I recommend getting it sized to fit perfectly. You shouldn’t look like you are swimming in the material. Since Finn’s body structure is more like a rectangle, it’s going to be difficult to capture that same look. Instead, go for a more human looking version of him and you should be fine. All the cosplayers I’ve seen that tried to look boxy actually ended up looking bizarre while the more humanized versions were easily recognizable.
Shorts: Some royal blue jersey shorts should be perfect for Finn. I saw a lot of cosplayers while searching for previous ways that this was done that attempted to use jeans instead. In my opinion, the cosplayers that used blue jersey shorts or the like instead of jeans looked more like Finn. It’s also easier to see that Finn is probably not wearing jean shorts when compared to Marceline when she clearly wears jeans at points that have pockets and slight details added in the drawing style.
Socks: All you will need for Finn are some long white socks which I recommend rolling down as many times as possible to give it that perfect look.
Shoes: The interpretations of Finn’s shoes that I saw that seemed to work the best for this cosplay were the ones that did the outfit with simple black tennis shoes though I thought that these were pretty cool because they are one solid “shoe” though they are really beach socks. However, here is a pair of unisex black shoes that should work for everyone.
Sword: If you aren’t able to forge your own awesome Finn sword like Man At Arms did…
… there are other videos out there that will show you how to make a duplicate Finn sword that could actually be taken into a convention hall.
And now you look mathematical!!!
Which character do you want to see featured next? Leave a comment below with a suggestion and I will see what magic I can work for you!