*Marvel: Greer Grant Nelson was originally the costumed vigilante known as the Cat. In her final adventure in that identity, she was mortally wounded but the mysterious cat people saved her life by transforming her into one of them (Giant-Size Creatures #1). After that, she went on to star in her own brief five issue series in Marvel Chillers #3-7, all now in stock. Despite a hotch-potch of artists of varying merit (NB John Byrne art in #6), Tigra has gone on to be a regular in the MU. 
IN THIS UPDATE: MARVEL CHILLERS ALL SOLD
3 VG p £10 Start of Tigra series
4 VF+ p £10 Tigra vs Kraven the Hunter
5 FN/VF p £6.50 With Red Wolf & Lobo
6 VF £11.50 John Byrne art
7 FN+ £6 Tigra vs the Super Skrull