Ferghus is the blacksmith of Tir Chonaill. Though middle-aged, his well-defined musculature attests to his background and experience. He is most known for his less-than-artful management of travelers' equipment, many of which have met their fate under his hammer. Strangely, he can upgrade equipment with no problems at all while repairing them is not his strong suit.

Occasionally, he is seen heavily intoxicated with his faithful friend, Ranald.

According to Edern, Ferghus was once a student of his, always clumsy and breaking things more often than fixing.

According to Padan, Ferghus is no longer allowed to do repair work for Padan's troops, or the royal guards of Tara, most likely due to his tendency to break equipment.