I'll make a walkthrough when I have free time :D You can unlock 3 guys to play with, the dragon rider (talk with the big guy, give him the broken vase, and ask about dragon rider) is easy to miss.
About the riddle:
caspian cyan pegasus gemini ice
philip green griffin libra
paris blue phoenix aries earth
mose pink unicorn leo wind
Erik red dragon scorpio water
And thanks for your compliments and for playing the game xD