Ethereal Monster

The Ethereal Monster is a huge red-scaled brute, which only appeared in Ultima VII within the Tetrahedron Generator. It is unknown from where the Guardian got this monster, but it is very strong and tough, and can quickly slay even the strongest Avatar in mere seconds. It is also very resist physical damage, requiring advanced weaponry to damage it. A glass sword or the Black Sword are the easier ways to kill it, as most other weapons aren't strong enough to handle this creature. However, other powerful weapons, such as the triple crossbow in combination with magic bolts can work well.