Nagisa

to me kaworu's more like a serpent (especially mangaworu) than a kawaii baby angel i mean he supposedly know he's death would cause shinji suffer (he's not stupid) but he sacrificed himself anyways it's like "wow let me look at your face of suffering and lick your virgin tears"

he's just a child carrying out an elaborate prank with he's life to get the ultimate attention from shinji
but that's okay that's what makes him great