Marvel Two-in-One, Vol. 1 #19 (1976)

Claws of the Cougar!
Tigra makes her way past the damaged defenses of FF HQ, and warns Ben that the powerful negabands worn by Toomazooma are still out there. The pair have to team up to defeat the Cougar, but unfortunately, it's all a trap to capture them.
Release Date: 1976