Translation of "Tenebroso" in English

No lo sé, parece un poco tenebroso.

I don't know, it seems a little creepy.

Esta oscuro y tenebroso; por suerte, estás preparado,

It's dark, it's scary; lucky for you, you're prepared,

Ese anciano a menudo juega con títeres. Es tenebroso.

Often, that old man plays with puppets. It's creepy.