Yamachang is a restaurant owner in Insomnia in Kingsglaive: Final Fantasy XV. He is a refugee from Galahd, a former territory of Lucis that was invaded by Niflheim. He operates a restaurant in a poor part of Insomnia that serves Galahdian cuisine that is frequented by Kingsglaive members, though his food is criticized by the likes of Libertus Ostium for being unauthentic and made to cater Insomnian tastes. He wears a t-shirt with Li'l Malbuddy print, a popular cartoon character in Insomnia.
Kingsglaive: Final Fantasy XV "Fan Appreciation Special Movie"
At the end of 2016, Square Enix released the Kingsglaive: Final Fantasy XV "Fan Appreciation Movie" that features Li'l Malbuddy fleeing from Ultros, when Yamachang appears and makes short work of the monster. Yamachang is known for his dish "Malbo Smul," and this short film appears to show how he procures his meat.