Based on the נון shoresh root, Nun not only represents fish but also posterity (particularly great-grandchildren). That’s why he bites on a pacifier while baby eels surround him. His candle-lit halo signifies enlightenment, and his rotting vestigal tail signifies degeneration. The paradox of the last two attributes are the hallmarks of this slippery eel who — tempting to say — appears to be more than he seems.
After Inktober I’ll turn Nun into vector art since he’ll appear in the next comic update. But for now, more B&W previews ahead!