Friendly reminder that this physique was enough to be THE Batman ^^

[White_Bwoi]

Contrasty lighting and camera angle also adds dimension / he probably done some pushups before the "ACTION!" (common practice).
Robert was 79-80kg here, he's 185cm tall - so I estimate him here at ~ 17,5%? What do you think? It's not 20, but surely not even 15 either

 

[White_Bwoi]

 

[looksmaxxed]

in reality the first henchmen over 200lbs he encounters cripples this dyel for life