First appearance and origin of Tigra! Yeah, this name Hellcat is good, maybe you could use it some other time, for another take on the Cat, mayb ?
Giant-Size Creatures featuring Werewolf #1, July 1974, written by Tony Isabella, art by Don Perlin (pencils) and Vince Colletta (inks)
Good grief! That cover looks like it belongs on a coloring book!