
Randy with a mustache from using his ninja energy
The Art of Disguise is a power learned by the Ninja. This skill, Super Senses, and Earth Attack are currently the only 3 powers that Randy can use without wearing the Ninja Suit.
Description[]
The Ninja can change and alter their physical hair growth by focusing their ninja energy. If they loose control, the energy will master the Ninja, like major hair growth. It can be used in combat to fight, even if the Ninja can't move at all because it just requires focus.
Although it's not shown, it's likely that this ability isn't just limited to just hair, as the Nomicon demonstrated this ability by showing him a face of a man who was constantly changing certain facial features such as eyes, nose and mouth. Implying that the Ninja can change his entire physical appearance, achieving Shapeshifting.
In "Secret Stache", Randy used this skill to grow a mustache, enabling him to sneak into the Secret Stache party held by McFist (Randy didn't know it was a trap). However, when Howard sold him out due to being jealous, he lost control and it grew bigger. Later when McFist captured him he lost control again and it resulted in getting a "dog face", but actually turned out to be a good thing because this hides his face from McFist and Viceroy. Randy was then able to utilize his hair in combat to fight and then escape his plastic bounds.