You are bidding on a 2021 Topps On Demand Set GPK Garbage Pail Kids Funny Valentines 21 Card Set. Topps wants to be your GPK Valentine this year. Today Topps launched 2021 On Demand Set #1 Garbage Pail Kids Funny Valentines. The 21 card set contains 20 character cards, 10 new pieces of artwork in a/b versions, and 1 header card.. Artists Joe Simko, David Gross, Brent Engstrom, Joe McWilliams, and Neil Camera each did two cards for the set.