Henri

Henri is John (Number Four)'s Cepan. Henri is very serious about their mission. He will do anything to keep John hidden. He is very strict with rules like we leave if anything happens, keep your head down, always have emergency supplies at hand, etc. When Henri leaves to go to Athens and never comes back, Number Four and Sam Goode have to rescue him. A couple months later, a video of John using his legacies is posted on the internet. Henri wants to leave immediatly. John doesn't listen and runs away to go save Sarah. Hundereds of Mogadorians surround the school and Number Four is in the midst of a battle. Henri, Sarah, John, Sam, Mark, and Bernie Kosar join John in the battle. Towards the end, Henri is killed by a Mogadorian cannon.

In The Power of Six, John finally opens a letter that Henri wrote for John while he was still alive. He says that Sam's dad was one of ten humans that were suppose to help and guide the Loric when they arrived, and that he believed that Sam's dad was abducted by aliens. Henri also mentions that one of the nine garde was suppose to have the same powers Pittacus Lore had. That garde would be the only being strong enough to defeat Setrakus Ra.