Yuri Leonov is Gregori Leonov's only son. He was only briefly mentioned in The Overlord Protocol.


Yuri was a H.I.V.E. student when it was still located in Iceland. He was a difficult student at first, used to being pampered and getting his own way. Yuri was one of Nero's more difficult students, as his hatred at being told what to do needed to be channelled in the right direction.


In The Overlord Protocol, Yuri was responsible for a highly profitable raid on a gold train in Siberia. He was one of his father's most trusted lieutenants.

His fate remains unknown.

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