In a deliberate discontinuity first shown here and then repeated throughout the series, whenever someone forces Nathan to wear a collared "dress up" shirt, his trademark long hair is shown shockingly chopped off to a shoulder length bob. However, when he returns to his usual black t-shirt, his long hair is miraculously restored.
The letter M featured in the 'DieForDethklok.com' emblem is actually a mirror-imaged version of the letter M used in the Metallica logo.