There is a plaque in the oldest of CHERUB's gyms saying: "Any boy bringing in mud or dirt on his plimsolls will be thrashed.
He also has a shady side and can cheat his way out of a card game, and is a good and experienced thief.
Bivott only appears briefly at the end of the book, saving Rosie after their boat was hit by a U-Boat.
After meeting with Charles Henderson and the children, he decided to join them, under the pretense that they were running away to Spain.
After he discovered that they were, in fact, trying to undermine the Nazi plot to invade Great Britain he attempted to run away but was stopped by Paul.
After a while he is stabbed by a man he conned before and is shipped back to Great Britain where Luc replaces him.