You can’t deny it. You can see where Jem draws inspiration from Dazzler.
Fun Fact: Jem was supposed to be “M” but Hasbo could not copyright a letter of the alphabet so they changed it to Jem.
So this means that “X” can’t be copyrighted.
I’m guessing that the “X” design can be trademarked if it’s original.
Or maybe it just doesn’t matter🎤🪩💃🔊💖 
