Giant Ever-Rigged Phallus
Oh, why the giant phallus? Just for intimidation.
Hym "Yep... Giant ever-rigged phallus and it just chases you around 'Meh! Gonna rend you asunder! Meh!' It's fun. Because a wall monster chasing you around a maze is spooky BUT a wall monster chasing you around with a giant hard-on? Now that is fucking terrifying! Ho! That is not going to be pleasant. And really I'm doing you a favor by making that way because the less afraid you are the faster it gets you. So... You're welcome! I'm making it easier than it has to be. I might even let you out if you make it though the maze a few times."