Firstly, it was the common, not the uncommon form of Nero’s name.
Secondly evidence that the early Christians saw “666” as Nero Caesar, is found in the fact that other early manuscripts often changed the number to 616, which is the numerical value of the Nero’s name in Hebrew according to its Latin spelling
Thirdly, this is the Hebraic numbering, not Aramaic.
Fourthly, The early Church universally understood these numbers to refer to Nero. Even the futurist Irenaeus mentions that Nero is the Gematrian solution to the puzzle of the 666. In some manuscripts of The Apocalypse, the number had been copied as 616. Irenaeus points out that even this number would work as the solution to Nero’s abbreviated name. This is further evidence that the early Church understood the 666 as a reference to Nero, the personification of the sea-beast.
--------------------------------------------------------
There is a problem though with the above calculation. According to the rules of Jewish numerology, known as gematria, when the letter Nun appears a second time in a word, it is known as a "Final", and takes the value of 700.* So to be precise, NRWN QSR actually adds up to 1316 and not 666.
Hominid or Bigfoot have a better chance of being the Antichrist than Nero does.