Abstract: A toy figure, adapted to be detachably mounted on a base plate pertaining to a toy building set and provided with coupling studs, is provided with a leg assembly comprising a pair of identical leg elements having substantially plane rear faces (calves). Recesses comprising lengthwise extending channels or pairs of holes are provided in the rear faces of the leg elements, and the width of these recesses is substantially equal to the width of the studs of the base plate. The recesses are symmetrical with respect to the lengthwise extending median plane of the leg elements and, in the position of the leg elements wherein their rear faces coincide, the distance between the axes of symmetry of the recesses is equal to the module m of the building set.