Is that what's under his armor, something he's wearing over his armor or shapeshifting?

In the context of this comic I'm guessing the middle option is true.

RNGCombo said:

Is that what's under his armor, something he's wearing over his armor or shapeshifting?

In the context of this comic I'm guessing the middle option is true.

It's the third option. KH disguises himself as an old man named Ziusuthra during the Babylon chapter of FGO. Coincidentally, Ziusuthra is one of the analogs to Noah in Mesopotamian myth.