Wizards of the Coast created the Harry Potter Trading Card Game in 2001. They were also responsible for the series of Chocolate Frog cards which came out about the same time, first with plain cards and then with lenticular 3-D cards. WotC is owned by Hasbro.
01-helga-hufflepuff
24-quong-po
23-ignatia-wildsmith
22-newt-scamander
21-morgan-le-fay
20-merlin
19-gwenog-jones
18-derwent-shimpling
17-daisy-dodderidge
16-bertie-bott
13-hengist-of-woodcroft
14-cliodne
12-gunhilda-of-gorsemoor
11-donaghan-tremlett
10-lord-stoddard-withers
09-sacharissa-tugwood
08-uric-the-oddball
07-gifford-ollerton
06-adalbert-waffling
05-devlin-whitehorn
04-cornelius-agrippa
03-beaumont-marjoribanks
02-rowena-ravenclaw
15-bowman-wright
Wizards of the Coast