Silvally is very similar to Type: Null with the main difference being its revealed head. It has white hair trailing down all the way to its forelegs. It also has a white headpiece atop its head with 3 feathers jutting out. It has a drive around its jaw which changes its type according to the memory item it is given. This will the color of the feathers and other parts of its body to the related color.
When Type:Null gains a trustworthy partner, it destroys the mask it wears, increasing its speed substantially. While it has a wild personality, it is loyal to its trainer, risking its life for him/her.