I was looking at my old Happy Jack promos from the late 2000s. Among others, I have

HJ-P1 Jack
HJ-P2 Cavewoman
HJ-P3 Hellboy
HJ-P4 30 Days of Night
HJ-P5 Vampirella
HJ-P7 Alice (Grimm Fairy Tales)

Was there no P6 ?