The Tall Things

The Tall Things are a major, sentient group of mountains in the East of Poorthwart that separates the Levels from Titan Space 2. It is implied that they form a crescent around Titan Space 2 entirely, shielding it from the rest of the world. They share common ancestry, in some form, with the Anchorites, who despise them.

Appearance
The Tall Things all appear more or less identical, except for variations in height. They are tall and pointy, have eyes and mouths, and are equipped with expressive eyebrows that are by default showing anger.

Personality
The Tall Things are depicted as having low intelligence and juvenile, selfish personalities. Their distant relatives, the Anchorites, describe the Tall Things as "Shallow, spiteful, bored, ill-mannered and stupid. Not evil, as such, but with a child's selfish world-view. And with no knowledge at all of the Wobbles."

They appear to be able to overcome individual selfishness in the name of spite, and thus are able to act as a group when needed - for example, in their attempts to bring down Selbeneer when he crosses them. This event shows that, while the Tall Things are indeed stupid, they are prone to study when they feel they can use it to achieve their goals.