Sinne, similar to Sacrelivo, is humanoid in form and has no discernible legs, instead floating at all times, even when asleep. It is very small, much unlike its true form. Its eyes, all four of them (two on its head, and one on each arm), are only slightly opened when it is awake; a symbol of its weakened power.
When awake, Sinne has the power of suggestion and can easily deceive those who get too close to it into doing whatever it wants them too. It can instantly control the minds of all Dark-type Pokémon around it, and with its unique ability, Light Absorption, it can nullify the effects of all Normal-type moves used on it and around it.