|Height:||5' 1" (1.55 m)|
|Address:||West Covina, Califronia|
|Aliases:||Jas by Jayma Chan|
|Family & Friends|
|Family:|| Lourdes Chan (Mother)|
Joseph Chan (Father)
Jayma Chan (Sister)
Josh Chan (Brother)
Aunt Myrna (Aunt)
|Education:||Cal State Northridge|
|First seen:||My First Thanksgiving With Josh!|
|Last seen:||Can Josh Take a Leap of Faith?|
Jastenity Chan is a recurring character on Crazy Ex-Girlfriend. She is the sister to Josh Chan, Jayma Chan and daughter to Lourdes and Joseph Chan. She was bridesmaid to her sister's wedding along with Valencia and Ruby.
- Rebecca wrote her a letter to get into Harvard, unfortunately the letter was better than the application.