|Game||Tales of Vesperia|
|Japanese Voice Actor||Fumie Mizusawa|
|English Voice Actor||Leah Clark|
Chastel Aiheap (シャスティル・アイヒープ Shastir Aihiipu?) is a major character in Tales of Vesperia: The First Strike. She works for the military as a knight within the Niren Corps, serving alongside Yuri Lowell, Flynn Scifo, and her twin sister, Hisca Aiheap.
Chastel accompanies her captain, Niren Fedrock, to the laboratory of Rita Mordio, who provides them with information about the out-of-control aer near their post, as well as gives them a blastia that will absorb the aer and prevent any blastia equipped with it from overloading. While Chastel does not appear in the original Xbox 360 release of Tales of Vesperia, she was added to the PlayStation 3 version of the game as part of a sidequest.