We give a new construction of the q -extensions of Euler numbers and polynomials. We present new generating functions which are related to the q -Euler numbers and polynomials. We also consider the generalized q -Euler polynomials attached to Dirichlet's character χ and have the generating functions of them. We obtain distribution relations for the q -Euler polynomials and have some identities involving q -Euler numbers and polynomials. Finally, we derive the q -extensions of zeta functions from the Mellin transformation of these generating functions, which interpolate the q -Euler polynomials at negative integers.