The top has no movement of its own. Each turn it copies the legs' U, V, Z, half-sizes, height and flags, takes a height one less, sits 12 above the legs, and takes the legs' graphic plus 16 -- so it turns and steps with them: legs 16-23 and 24-27, top 32-39 and 40-43. Then it and whatever its old or new rectangle meets are marked to be drawn (SET_DRAW_OBJS_OVERLAPPED). The flags it copies carry the legs' mirror bit, and their draw bits, which the legs' update has just set (SET_WIPE_AND_DRAW_FLAGS).

The legs' height is 12 by now (the tail of PLAYER_LEGS), so the top's is 11, from 12 up to 23: the robot's box is 23 high in all, the height the legs take on their own while he moves. Unlike Pentagram's body, the top is kept out of the collision tests only while the legs move (PLAYER_LEGS sets bit 1 of its flags around the move), so other things can land on it and meet it.

A top marked killed (bit 6 of +$0D) marks the legs killed too and turns into the sparkle he dies in (START_SPARKLE); the legs' update does the same the other way.