X-Men Series II figures were first released with the card back pictured below and a Skybox X-Men Series I trading card. Each figure had its own special bio and instructions.
Later, the Series II figures were released with a Skybox X-Men Series II card.
Those figures that were reissued and/or repainted in 1993 were released with the card back picture below, as well as a Fleer Ultra X-Men trading card. Again, each figure had it's own special bio and instructions. The strip running down the left hand side of the card was yellow for heroes and red for villians.
Those figures that were re-released in 1996 had the above style card, with the only changes being the copyright and other very minor changes.