Nemo Sonra is a pseudonym with many meanings.
In reverse, it says: Arno’s Omen.
Nemo in Latin means ‘nobody’.
Sonra consists of two parts, ‘Son’ and ‘Ra’. As a play of words on the ‘Son of Ra’. Also the similarity of the word ‘Son’ with the word ‘Sun’, with ‘Ra’ being the Sungod can be found.