Special Runners

 Runners are Runners whose cards can be only obtained through Special Events. They overall cost more Rings to upgrade compared to the other type of Runners. Because of this, they are the most expensive characters in the game to fully upgrade. To unlock a Special character, you would need to have at least 300 cards of the same character. There currently exists 22 playable characters.

List of Runners

 * Jingle Belle Amy
 * All-Star Amy
 * Slugger Sonic
 * Santa Big
 * Elf Classic Sonic
 * Excalibur Sonic
 * Ice Slider Jet
 * Treasure Hunter Knuckles
 * Longclaw
 * Lunar Blaze
 * Latern Silver
 * Baby Sonic
 * Teen Sonic
 * Reaper Metal Sonic
 * Elite Agent Rouge
 * Witch Rouge
 * Vampire Shadow
 * Sir Lancelot
 * Spring Cream
 * Tidal Wave
 * Tropical Storm
 * Quarterback Zavok

Trivia

 * Due to Longclaw, Baby Sonic, and Teen Sonic being tie-ins with the Sonic the Movie event as well as them being absent from the Rapid Recap event, it is currently unknown if there would be another Special Event where you can obtain their cards.