Horns
Curved horns in various styles, such as twisted, ram, or bull. Can cause a tsabhua's natural horn to be curved instead of straight.

A singular horn grows from the dorsal anterior end of a colonist's skull or from the forehead, pointing forward or upward.
If on a tsabhua, this can result in a secondary nose horn.

Bony protrusions on either side of a colonist's face. They can have from one to five pairs of horns anywhere along the jawline from their chin to below their ears.

These colonists have one to two straight horns added onto their skull from the midway between their eyes to the back of their skull. These can be from as short as an inch to as long as several feet, similar to an oryx.
These horns appear by all means to be antlers but have a bony core and a keratin exterior. They can have up to 12 tines total.
Can cause a tsabhua's natural horn to be tined instead of straight, up to three large or five small tines maximum.