At one point there was a weekly Drink and Draw at a local queer bar that used to have geek-themed sessions where models would cosplay. This life drawing set was started in that period (pre the Batman 2022) when the Riddler was the primary goto cosplay for lanky guys.
(In fact, my specific reason to go to any comic con for years was to gawk at tall twink bulge in skin-tight Riddler suits.)
Naked versions on my Patreon here: https://www.patreon.com/posts/riddle-me-this-d-88867347