well my last name is actually Diab but my friends added lo to the end to make it sound cooler, thus the name Diablo (Diablo is my nickname btw so feel free to call me that, Diablo meaning Devil in spanish.
But diab_low was me trying to make something different I did not want it too look the same as my nick name so I just put diab_low this is also my Skype and Twitter name :D