Well, first of all, for those of you who don't know, Roxel is the child of Axel and Roxas from Kingdom Hearts (don't ask me how that happened ). He was created by Jack666rulez on deviantART.
I've seen a few Roxel cosplays, so I thought he would be a very interesting character to cosplay.
I am in the process of making his outfit, with no foreseeable problems, apart from his earring. Roxel has an earring shaped like a small black chakram in his left ear.
Any ideas on how I could make it, or even buy something that looks pretty similar?
Here are a couple of reference pictures. ^^

http://jack666rulez.deviantart.com/art/Axel-Roxas-Roxel-48582657?q=gallery%3AJack666rulez%2F976813&qo=144

http://jack666rulez.deviantart.com/art/adult-Roxel-finishedBW-50505503?q=gallery%3AJack666rulez%2F976813&qo=135

(My cosplay is of the younger Roxel. The former of the two links.)

Here's my suggestion, see if you can buy some base earrings off ebay (some ebay shops that sell jewelerry making supplies should have some) you want the butterfly and earring kind not the hook kind (if that makes sense)

Then make the design out of craft foam or dough, it will have to be really precise unless you want to make it a little bigger to accomodate the full design.

The only problem is with the lines so thin it will likely break in places through normal wear and tear.

Anyway that's my suggestion, not the only one though and I'm sure other people will have better ideas than me XD;;;