"Professor Xavier is a Jerk!"
April 1983
After Kitty helps Lockheed destroy a Sidri nest in the basement, she joins the team
marvel.com
- first appearance of Madelyne Pryor
reprinted in
*
40 Years of X-Men
2005, in collection
(2005*)
*
Uncanny X-Men: From the Ashes TPB
1990, in collection
(1990*)