@westcoastsosa I'm not really a modding expert here so unfortunately I can't help you on that but here's his San Andreas model someone made.

https://www.gtaall.com/gta-san-andreas/skins/81905-yakuza-0-goro-majima.html

Anyone? There's also a GTA SA PED for him so if its easier for anyone to just convert that I guess its fine.

Can someone make a PED out of Goro Majima from Yakuza 0? Here's a link to his 3D model.
https://sticklove.deviantart.com/art/Goro-Majima-Y0-606859286