I can't see why Marvel can't used Greer Nelson as The Cat/Tigra as Peter's partner.. They might had made an awesome team had Marvel placed The Cat/Greer Nelson in the pages of ASM after her initial series "The Cat" had ended. The character might had avoided being used as Tigra if she was tied in the world of Spider-Man as a police officer who is a crime scene investigator by day and a costumed crime fighter at night. There was so much potential between Spider-Man and Greer Nelson that could had made her a household name today.