Is one deck for storybook characters and the other enchanted forest?

Not really. Both decks have the same characters just in different costumes. Some are in storybrooke costume others are in enchanted forest dress. And the one deck contains Zelena, the other dosent . Hope that helped?

Is this the black and green sets together?

Yes :) the pack on the left is black and the pack on the right is green.

What characters are there

Back Cover - (left to right): - Evil Queen/ Roni, Hook/ Killian Jones, Rumplestiltskin/ Mr. Gold CLUBS: 2 - Baelfire / Neal Cassidy 3 - Emma Swan 4 - Jiminy Cricket / Dr. Archie Hopper 5 - Grumpy / Leroy 6 - Sir Henry / Henry Mills 7 - Robin Hood / Robin of Locksley 8 - Snow White/ Mary Blanchard 9 - Rumplestiltskin/ Mr. Gold 10 - Belle/ Mr. Gold J - Hook / Killian Jones Q - Evil Queen / Roni K - Prince Charming/ Prince David A - Emma Swan, Hook/ Killian Jones DIAMONDS: 2 - Snow White/ Mary Blanchard 3 - Granny / Widow Lucas 4 - Belle/ Mrs. Gold 5 - Hook / Killian Jones 6 - Grumpy / Leroy 7 - Little Red Riding Hood/ Ruby 8 - Sir Henry / Henry Mills 9 - Zelena / Wicked Witch of the West 10 - Prince Charming / David Nolan J - Emma Swan Q - Evil Queen / Roni K - Mr. Gold A - Evil Queen / Roni, Robin Hood / Robin of Locksley SPADES: 2 - Granny / Widow Lucas 3 - Robin Hood / Robin of Locksley 4 - Baelfire / Neal Cassidy 5 - Sir Henry / Henry Mills 6 - Zelena / Wicked Witch of the West 7 - Grumpy / Leroy 8 - Belle/ Mrs. Gold 9 - Emma Swan 10 - Hook / Killian Jones J - Snow White/ Mary Blanchard Q - Evil Queen / Roni K - Prince Charming / David Nolan A - Belle/ Mrs. Gold, Rumplestiltskin/ Mr. Gold HEARTS: 2 - Doc 3 - Jiminy Cricket / Dr. Archie Hopper 4 - Grumpy / Leroy 5 - Little Red Riding Hood/ Ruby 6 - Belle/ Mr. Gold 7 - Snow White/ Mary Blanchard 8 - Emma Swan 9 - Hook / Killian Jones 10 - Sir Henry / Henry Mills J - Prince Charming / David Nolan Q - Evil Queen / Roni K - Hook / Killian Jones A - Snow White/ Mary Blanchard and Prince Charming/ David Nolan JOKER: Black - Rumplestiltskin Red - Mr. Gold