Okay
Have decided on my mythical creatures after lots of laborious looking through internet sites......
I am going to have each suit based around flight and land
the four top cards (Ace, King, Queen and Jack) will be based on a mythical beast from a different contienient and each will represent one of the four elements - earth, air fire and water.....
This should then fit in with my jokers which are a half lizard/half bird and a sea serpent.

So:

1.)Phoenix (Native American) - which is a firebird - represents element fire
2.) Rainbow Serpent - (Ngalyod/ Borlung - Abopriginal) - which is a reptile like creature and represents earth
3.) Jengu (African tribal) - which is a mermaid like creature and represents water
4.) Gamagon (Russia) Which is a bird with the face of a woman and represents air.