A new Superman Ped Model. Please know I made this because I didn't like the others, and it's impossible to add capes and such whilst modding is still a learning experience for all of us with GTA 5.

To install, go to this path in Open IV:
C:\Program Files (x86)\Steam\steamapps\common\Grand Theft Auto V\x64v.rpf\models\cdimages\componentpeds_a_m_y.rpf\

Look for a_m_y_musclbeac_01.ytd
Right click > Replace > a_m_y_musclbeac_01.ytd .ytd file in .RAR.

And you're done! :)