Oooh I figured out the symbol on this guy:
It's one of the symbols for 'Ra', the Egyptian sun god. This:
And OH I just realized this one's design
looks like the symbol 'She' for water:
This one
is really hard to make out, and the green color isn't helping. ^^''
No idea about the green head/white body foal either. ^^
Info from here: http://www.egyptartsite.com/symlst.html