Alr this might look extremely goofy so allow me to put some context with the crazy looking face.

Recently the defense ministry of the udavian south korea made public the presence of a directed energy weapon in Kai more specificly a particle beam a type of energy based weapon that consists on projecting a beam of particles at light speed and pretty much disintegrating anything caught by the beam but how does this explain that GOOFY face..

Well what we see here is nothing but Kai's visor open,thats right the beam is so powerful that his armored visor must open to allow the emmiter inside his head project the beam freely otherwise the beam would literally disintegrate his visor and leave his optical array exposed permanently