Dreadnought (H.I.V.E #4) by Mark Walden

The world's most powerful villains have a problem.
One of their own has gone rogue and is threatening global Armageddon, with himself at the head of a sinister new world order.

Meanwhile, Otto, Wing and other students from H.I.V.E. are en route to a training exercise in the Arctic known as the ninety-three-percenter, owing to the proportion of students who make it back alive.

But before they arrive, events take over, and Otto, Wing and his most trusted villain-friends find themselves in the sights of the most dangerous man alive, with nowhere to run to.