Protector Z Smiles (プロテクトΖスマイル, Purotekuto Z Sumairu) are enemies featured in killer7. They are a variety of Heaven Smile, more specifically an upgrade of the Protector Smile, and the precursor to the superior Protector ZZ Smile. Like its brethren, it is first encountered in Target03: Encounter.
Protector Z Smiles behave identically to their counterparts. Appearance-wise, they are marked out by their green skin and silvery-white armour plating, which protects them from nearly all forms of damage. However, MASK de Smith can easily kill them by using Shock Shells against them. Despite its 'improvements' over the basic Protector model, it is soon surpassed by the superior ZZ model.