However, this is just a coincidence, as Isla is also a common chilean surname, e.g. Juan Isla. This makes sense since people in Japan use to call each other by their surname.
This also means that first name of Isla is unknown.
Isla, Dolores, and Heidern are hinted to be the canon winners of the 15th tournament, due to the fact that they faced, along with Team Hero, the final boss of the game (Otoma=Raga).
When performing her Climax Super Special Move, Isla will finish off the opponent with a kick similar to the one often seen in the Kamen Rider franchise. This wouldn't be the first timeKOF has referenced Kamen Rider, however...
Her team's theme song is quite similar to the motifs seen throughout Jet Set Radio and The World Ends with You (and Persona 5 to a lesser extent), with its lyrics perfectly encompassing her rebellious attitude and lifestyle.
Despite their rivalry, Shun'ei and Isla are the only pairs of rivals that don't have a Fated Battle theme (at launch), compared to Kyo ("Goodbye Esaka" if on the Player 2 side) and Iori ("Sadistic Eyes", same conditions as the latter), K' and Krohnen ("KD-0084"), or Ash and Elisabeth ("No. 53", a remix of KOF XI's intro theme) before them.
