The River-Cross Captain is a monster which stands in the river between City of the Plume and Cave of the Vicious. It is immune to all attacks, and is not required for any quest. It is immune to damage, and will not aggro even if attacked, unless the player somehow manages to deal damage to it (a weak Duskblade may be able to via Destiny Hunt). However, it is recommended to not try to kill the valiant guardian of the river!