Thar be a Quint. As for the Esquinotsons get as close to a Quintesson as you can without getting me sued lol but seriously. Oh and remember a Esquinotson has but one face and it is similer to the "death" face you see facing the viewer in the above image.
http://unicron.com/mainpage/unicron/unicron.htm
There you can find many images of UNICRON whose planet form should be the basis of Esquinotson Worldships.
Thar be a Quint ship. As for Esquinotson ships they should be a greenish hue.
Thar be Quintessa. It could be a basis for stations i suppose.
^_^ Thats all for now ill post the stuff for the others later.