Sonic Hearts: Dissidia is a fanfiction series featuring characters from Sega's Sonic the Hedgehog series and Square Enix's Kingdom Hearts series. It revolves around Sonic and his friends travelling across Disney worlds in order to stop a newly resurrected Xehanort and a group of Final Fantasy villains teaming up with him.


The story begins with Sonic adventuring around as usual. More coming soon...


Main Heroes

Sonic the Hedgehog



Miles "Tails" Prower

Knuckles the Echidna

Amy Rose

Squall Leonhart

Main Villains

Doctor Eggman





Kefka Palazzo


Fictional voice cast

Roger Craig Smith - Sonic the Hedgehog

Haley Joel Osment - Sora

Kate Higgins - Miles "Tails" Prower

David Gallagher - Riku

Kirk Thornton - Shadow the Hedgehog

Cindy Robinson - Amy Rose

Karen Strassman - Rouge the Bat

Doug Erholtz - Squall Leonhart

Mike Pollock - Doctor Eggman

Richard Epcar - Xehanort

Suzanne Blakesee - Malificent

Jim Cummings - Pete

Tasia Valenza - Ultimecia

Dave Wittenberg - Kefka Palazzo

JD Cullum - Kuja


  • This fanfic series introduces Kefka Palazzo as a major villain. Other Final Fantasy villains that play important roles in the story are Kuja and Sephiroth, who happens to a rivalry with Kefka.
  • In one scene, Kefka attempts to impale Sora with a spear, only for Tails to take the shot instead. This may be a reference to a scene in Final Fantasy VIII, which involved Sorceress Edea impaling Squall with a icicle.