This is probably one of the easiest Pokemon DIY costumes. All you'll need is an orange shirt, brown pants, a green vest, and there you go -- instant DIY Brock costume. You can jazz it up with a sporty green vest if you like, along with a camping backpack, but that's completely optional.
If you really want to go all out, though, you could gel up your hair -- or get a spiky wig -- and then carry around a pet rock and call it Geodude. This is a costume that would work just as well for Brock's female fans, too!
Whether you're a Nurse Joy fan or a Pokemon GO fanatic, there's something for almost everyone to choose from on this list of DIY Pokemon costumes for Halloween -- or the expo floor.
Which costume are you planning on making? Let us know in the comments below!