Hades and Persephone bookmark Picture

So right after drawing the medea bookmark I did this little number, with started out as a figure drawing. Mythology class is absolutely fantastic, I can't get enough.
Why do they have blue and pink hair?! Are they anime characters?
There also seems to be some legs missing.
Persephone and Hades
Hades and Persephone bookmark
Elements: Earth V
The Olympians