Mobile Robot

FIG. 1 is a top, front, and left side perspective view of an embodiment of the design for a mobile robot. FIG. 2 is a top, rear, and right side perspective view thereof. FIG. 3 is a front elevation view thereof. FIG. 4 is a rear elevation view thereof. FIG. 5 is a right side elevation view thereof. FIG. 6 is a left side elevation view thereof. FIG. 7 is a top plan view thereof; and, FIG. 8 is a bottom plan view thereof. Broken lines are used to illustrate features of the mobile robot that form no part of the claimed design.