This is a sketch which I requested, but also colored. I do not own the original art.
Night Howler is not canon as he is only in an AU.
Wolfgang and Nightshade are shown expecting their cub, Nightshade is pregnant with Night Howler.
The first pic is a clothed version, the second pic is a masked Nightshade version, and the third pic is an unmasked Nightshade version. And the forth pic is the original sketch which is not mine.