Sonic is owned by SEGA.
Mario Bros is owned by Nintendo.

Sonic Sprite by Mr. Porkchop

Music I used:

Mario Bros theme:
https://www.youtube.com/watch?v=uhscMsBhNhw

Sonic dubstep Music:
https://www.youtube.com/watch?v=L-e2WTeTALw

Thug Life:
https://www.youtube.com/watch?v=2C3yPm4XPX8

Gourmet Race:
https://www.youtube.com/watch?v=FAByWyvuu7s