Queen of the ISOs
|Allies||Tron, Quorra, Anon, Kevin Flynn|
|Out of universe information|
|Actor||Kari Wahlgren (voice)|
Radia was an Alpha-class ISO whom Kevin Flynn had picked to be Co-systems Administrator alongside Original System Administrator Clu, but the installation ceremony was interrupted when the virus Abraxas attacked. After Clu took over the Grid, Zuse advised Anon and Quorra to inform Radia, who could pass the news to the rest of the ISOs faster than anyone else. Radia recognized Abraxas as her ISO friend Jalen, who had supposedly been killed but was instead reprogrammed by Clu into a Virus. Abraxas attempted to infect her, but she instead derezzed in a brilliant display of light.
- Radia is very similar to the character Ophelia from TRON: Betrayal. It is possible that she was intended to be the same character, but was named differently due to development miscommunication between the game and comic book.
- Her name may have been inspired by that of Radia Perlman, a software developer.