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 second shift amount data by changing the shift amount data in accordance with the size data; a step for creating second motion displaying speed data by changing the motion displaying speed data in accordance with the ability data; and a step for creating, 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.