"I wonder which path you would choose... when looking at Harling's mirror."
― D'Elise to Schroeder[1]

Princess Rosa Cosette D'Elise is a member of the Erusean royal family. She is the daughter of the King of Erusea, the Erusean head of state and monarch.[2]


D'Elise lived a life no different than a commoner until the defeat of the military dictatorship of the Erusean Republic by ISAF in the Continental War. ISAF restored the monarchy as a new government, making her father king and herself a princess.[2] With the outbreak of the Lighthouse War, D'Elise became known for her defense of her country's offensive war, claiming that the International Space Elevator was a violation of Erusea's national sovereignty as well as publicly denouncing Osea's actions during the conflict, claiming that the country attacks indiscriminately and has injured many civilians.[3][4]




  1. File:Ace Combat 7 Skies Unknown - Gamescom 2018 Trailer.
  2. 2.0 2.1
  3. File:Ace Combat 7 Skies Unknown - E3 2017 Trailer.
  4. File:Ace Combat 7 Skies Unknown - Gamescom 2017 Trailer.