The ornamental design for toy robot, as shown and described.
FIG. 1 is a perspective view of a toy robot showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plane view thereof; and,
FIG. 7 is a bottom plane view thereof.
Broken lines in the drawing views are included for the purposes of illustrating the unclaimed portions of the toy robot and form no part of the claimed design.