The Fairy King vs. The Angel of Death「妖精王 ｖｓ．死の天使, Yōsei-ō vs. Shi no Tenshi」 is the 281st chapter of the manga, Nanatsu no Taizai.
Q308. Minaminzemi-san (From Kanagawa Prefecture): Why does Helbram, or even better, why does King too, transform into a fat old man?
Nakaba: Because fat old men are badass!! Huh? They are, aren't they?
Characters in Order of Appearance