The user can climb walls and stay unto ceilings. The user does not deny gravity, but has the ability to adhere to surfaces unaided. However in order to truly be "crawling" on the user must be able to maintain balance for long periods of time, compared to Wallrunning where the energy is only temporary. Those with Reptilian Mimicry could have microscopic setae on their hands and feet like a gecko, or suction pads like a frog.