Experimental sculpts for character designing

Had an idea for a character sculpt since quite sometime.So did some quick head studies to decide upon the possible designs.Instead of trying out sketching the designs, thought of doing the pre-visualization directly in 3d after doing some very rough sketches.All these were really quick sculpts so havn't gotten into detailing them much..

 Was confused whether to keep the anatomy realistic or more on the caricatured side..so tried both..