Cindy,

  I also posted this message on the LIA forum...

He might have already told you, but Jared and I 
have similar Dougas, and he told me where he 
found they were from- Episode 25, as 
Ayato/Rahxephon is talking to Haruka and the 
others...He says "she's calling me"(referring to 
Quon)and looks up just before going back into 
the sky to face her.  I double checked, and sure 
enough, he's right!