elaina, im pretty sure he's just a central.
Fresnowhitte, P.Mitchelli are the size of P. henrylawsoni (<10") they are rather small, and rather impossible to create a 26" monster. P.VitticepsXP.Barbata IS the German Giant. the 'vittikins' is a hybrib between P. Vitticeps and the rankins (P.Henrylawsoni) they full out around 12" with features from both the pygmy and central. Marcia Rybak first created them by accident, they were popular for a while, as she sold a few hundred, although im not sure if these days they are that common.
Maxattack, unfortunately the clown agamas arent australian. im not entirely sure were they are from?..