What are the meaning of the symbols on the ninjas' hoods?

I get that Nya's is W for Water, and Cole's is E for Earth. But Kai has the letter H for some reason? Zane's is a shuriken, which makes sense but why is it a picture and not a symbol like the others? And then Lloyd and Jay have random symbols which aren't Ninjargon letters. Why not have them all as the letters of their element? submitted by /u/f-mcallister [link] [comments]