Do you meet your gray warden from dragon age origins in dragon age 2

no, but you meet some familiar faces: Flemeth, Alistair, Leliana, Bodahn Feddic and Sandal, Anders from Origins: Awakening, Bann Teegan and Lady Isolde, (Bann Teegan and Alistair in the Viscount Keep Lady Isolde and Bann teegan together in Chateau Haine.) I think that's all of the characters.