1. An image processing method for creating an animated image of a character in accordance with: shape data of the character; motion data indicating variations per unit of time of the shape data for a predetermined motion of the character in a virtual space; motion displaying speed data indicating a speed to display the predetermined motion in accordance with the motion data; shift amount data indicating a shift amount per unit of motion for the predetermined motion of the character; and ability data indicating a shift amount per unit of time for the predetermined motion of the character; wherein, size data indicating a character size in the virtual space and the ability data are individually set for different characters, and the method comprises: a step for creating, by a processor, second shift amount data by changing the shift amount data in accordance with the size data; a step for creating, by the processor, second motion displaying speed data by changing the motion displaying speed data in accordance with the ability data; and a step for creating, by the processor, in accordance with the second shift amount data and the second motion displaying speed data, an animated image of the character shifting with the predetermined motions.