The lost Hamato children

The guys found 3 eggs and 3 mutant turtles hatch, which Splinter took in as his own, who are these never before seen turtles, were have they gone? Does Karai have a more friends then we know, what's this about 'dark clones? Who is Mezcaal and Angle, who claim to be Raph and Mikey Fiancés? SPLINTER HAS A GIRLFRIEND NAME RHEA! What of this world ruled by humanoid turtles? BLUE ROZE