He is a free-spirited teen and is known mostly for his obliviousness to his parents' strange behavior. As of now, he is still unaware of his family's volatile secret.
Throughout the series he is shown to have a love of sports and movies. He also befriends Stan Beeman, feeling able to talk to him about fancying his teachers.
When his parents are called to his school, they are surprised to find out that he has a talent in mathematics and he is offered a scholarship at an exclusive prep school in New Hampshire.
He moves to the boarding school and becomes a star ice hockey player there. His future at the school is threatened by the financial failure of the travel agency. He is ultimately left behind in the series finale as his parents return to Russia alone, as they are also abandoned by Paige.
Henry has shown the same characteristics as his father, Phillip. In the episode "The Clock" this is explained by Elizabeth. He likes to play hockey with his father, and they practice at their house.
In spite of his love for video games, his parents learn in Season Five that he is excelling academically.