The most used 'special effect' was Supergran's ability to jump very high (or at least higher than normal) and was achieved using a trampoline and trick camera angles. Another well-used effect was 'Supergran walking/running quickly' which usually involved a stunt double walking away from the camera quickly with a 'trailing' visual effect emanating from the retreating figure, making it appear that she was walking/running so fast that her afterimage was momentarily being left behind. To further accentuate the effect, other characters (usually the children and Inventor Black) would be required to 'run' after her, complaining that she was walking/running too quickly.