Raiden's hat in the comics.
Dark Raiden's Hat in MK:A Konquest mode.
Raiden with and without his hat in MK vs DC.
Raiden with his hat in MK 2011.
Dark Raiden's MK:A Versus Cutout
Dark Raiden having his hat on his tower portrait in MK11
Dark Raiden having his hat on his versus portrait in MK11
Past Raiden with his Hat.