Diamante

In Arknights, the operator codenamed "Diamante" (Refracted Starlight) is an Infected Leithanian man named Heinz. By day, he is a humble gem appraiser, but by night, he is the notorious phantom thief who strikes fear into Leithanian nobles. Known for his gem expertise and unique Arts that utilize prismatic refraction, he can alter perception. He joined Rhodes Island after an anonymous person attempted to blackmail him. As a 5-star Primal Caster, Diamante specializes in inflicting Necrosis damage and dealing additional elemental damage on targets affected by Necrosis, though he requires synergy with other operators capable of inflicting Necrosis. His base skill improves the chance of high-value trade orders and can boost the efficiency of trading posts. Despite using his phantom thief codename as his operator alias, it went unnoticed for quite some time that he is the same thief.