Legs.STL, and four copies of
Peg.STL. Snap three of the pegs into the holes in the body. Snap the torso onto the peg at the bottom of the body. Push the last peg through the hole in the bottom of the torso.
Snap the legs into the hip peg on either side. Snap the arms. Press the head into the neck, join firmly being careful not to break the neck joint. If it does break remove it with a pair of needle nosed pliers and glue it back in place with superglue. Allow it to dry and then try again. Then pose and play with the new robot.