Hey guys, Here is the logo I came up with after reviewing what Kartunes was all about... I wanted to keep it horizontal in nature so that it would look great on both your vans and your shirts.
#16 has some metallic effects going on, so it would work great on your vans and other full-color printed things (biz cards, letterheads, websites, etc.)
#17 & #18 are flat one-color designs that would silkscreen perfectly onto t-shirts. Basically anything black/white or silkscreened would look great with this version of the logo.
And here is an alternate idea. This one is much cleaner/simpler and more MMA feeling. It's really just a matter of personal preference, as to which you like between all of them...