At the beginning of the episode, it says that Crocker has been hunting fairies since 1975. Crocker lost his fairies in 1972, when he began to be obsessed with them. On the other hand, he may have just been obsessed with fairies since he lost his own in 1972 and didn’t start hunting them until 3 years later since he probably needed time to prepare for fairy hunting.
The magical creatures on the section of the wheel are (clockwise from the top when it's first shown):
Snow White and the Seven Dwarves - Cosmo mentions that in Snow White, there was a 8th dwarf called Crazy. He says that the Great Potato looks in his magic mirror to see if he’s the “fairest” of them all and if he’s not he gives the better looking a potato a poison apple.