Sonic/Hetalia

Cast

 * Cosmo as America
 * Tails as England (they are both smart)
 * Amy as China (both are nice and are good at fighting)
 * Sonic as Russia (both have a dark side)
 * Knuckles as France
 * Tikal as Canada (both aren't recognized often)
 * Shadow as Germany
 * Rouge as Italy
 * Blaze as Japan