Sporting gold engravings along its torso's black painted chest, and bright crimson armor, the Sinanju proudly stands. This mobile suit is a customized version of the Sinanju Stein, with its own distinct Neo-Zeon design in place, having been piloted by Full Frontal. Its royal knightly look is impressive as it speaks with its mono-eye lit up.

"I am MSN-06S Sinanju, the embodiment of Zeon's greatest former glory. Heed my words, for I will bring down all who fight against Zeon. Sieg Zeon!"