"Veliar" means "terrible," "vile," "wicked.

"Veliar" is the name of a satanic power among the Israelites.  

"Veliar," as a concept, has been modified into the concept of "Antichrist."  

 "Son of Veliar" is a Jewish characterization of someone as a very bad person.

 "Son of Belial" in the Russian Bible translates to "wicked, lawless, unfit.

  "Son of Belial" in the Synodal translation means "wicked, wicked, despicable man.