This is the first Eel introduced to players, and it is currently the only non-Boss Roundhead Eel in the entire game. In large swarms, they can be a threat to unprepared players, but they should be easily taken care of by players who have gotten this far. On single eels, a Boxer's Poison Knuckle 3 with a Peridot 2 or higher should do some heavy damage. For swarms, Thunder type weapons should prove to be useful, especially if it is an Area of Effect weapon. Ice type weapons will also help if it becomes a nuisance, especially when the team is attempting to attack something else.