Among the Regulars that entered the Tower, five individuals were said to be the top five strongest E-ranked Regulars at a time. To attain this title, it was assumed to revolve around the known acts that each had done to display their powers as the strongest. At the time Viole was on the 30th Floor, Varagarv was famous and known to be overwhelmingly strong and therefore thought to be the strongest E-rank Regular.