The ornamental design for a monkeyfigures, as shown and described.
FIG. 1 is a front elevational view of monkey figures showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof; and,
FIG. 5 is a left side elevational thereof.
The broken line showing of the monkey figures is included for the purpose of illustrating environmental structure and forms no part of the claimed design.