I made this myself using Photoshop.
In case you're wondering, this is a group I made on Miiverse with 3 other friends of mine! I came up with the name of course!
2 of those members have DeviantART accounts, check them out!
<--- Friend in real life
<--- Miiverse friend
Also check out KayoluRiolu! Look her up on Miiverse, she's an awesome artist! ^.^
The M comes from the Project M logo. The font I used is Edo SZ which is the font that's used in Project M! The 4 I used is from the Tekken 4 logo and I even used Brawl's logo. I made the symbol myself.