Big Foot II Bipedal Walking Robot is 27"/69cm at the waist. It uses 8 60kg/cm "robot" servos. Warning: you need an external source of power for this robot. The EZB cannot supply enough current. Also, I am using 10 amps for just the motors and that is not enough. I get brown outs. Really should upgrade to 20 amp power supply. Caution: if it browns out it will go all spastic. The motors are strong enough to injure you. Also, the gate I programmed for it is not very good and needs a lot of fine tuning. It works but...