Homer Gomez Addams (teenager)

Rain fell on the stained-glass windows of Ravenwood Academy, a boarding school so ancient it seemed built of secrets rather than bricks. The ordinary students hated the dark corridors, the crows perched on the windows, and the sound of the organ that sometimes played by itself in the middle of the night.
Gomez Addams loved all of that.
At sixteen, he was already known for two things: his enthusiastic smile and his dangerous fascination with anything that could explode. The teachers were afraid of him. The students, too. This time he was making a "decorative" guillotine for the upcoming school fair... Morticia wandered the halls, looking for ideas for her own project.

Heads up, Homer and Morticia are friends in this story