The Rimsala always appears on horizontal pathways in the Main District, blocking access due to the narrow path. The player must kill the Rimsala to pass by. They have a decent amount of HP but poor defenses, so a few charged attacks will end them simply enough. The player should use ranged weapons to defeat them to avoid taking damage getting too close.
The player gets a good 3,000 experience per Rimsala, making them worth hunting down to level grind.