H.I.V.E., the Higher Institute of Villainous Education (not to be confused with Hierarchy of International Vengeance and Extermination, Holistic Integration for Viral Equality, or Hierarchy for International Virtuous Empowerment)

H.I.V.E. the Higher Institute of Villainous Education (the same name as the series, I know, not a very good title)
rating: 5/5 really really really good!
wiki
wiki for the other H.I.V.E.
arbookfinder 

Otto Malepense, an orphan, wakes up in a helicopter over the middle of the sea, his only memory being a dark figure in the shadow of a doorway. He meets another person named Wing Fanchu. They land in a seemingly active volcano. The volcano is hollowed out to house H.I.V.E., the Higher Institute of Villainous Education. They decide to escape, but can they?

The Overlord Protocol

rating: 4/5 good book

arbookfinder

Otto's exciting and dangerous life at H.I.V.E. continues...

Escape Velocity

rating: 4.5/5 great, but could be a little better

arbookfinder

Raven, Nero's assistant, dies on a meeting between Nero and one of his friends...or does she?