It used to be that the big D didn't have any special attacks, he just area-attacked everything that was fighting him for several hits. I recall one particular instance when I was connected over a 14.4 modem with my Shadow ranger, Zorodan. We Shadows had about...8 people, and went to raid Battle. Myself, Dilamon, Killfax, Vsomething...I forget who all was there. Basically everyone had a Nightwalker, someone had a bunch of other charmies, and myself and Dilamon had bears. So there were about 20 PC/charmies attacking Big D.

Each round of combat, he would hit each of us proportionally to how many were fighting him (I don't know how it was coded, but it was effective). He killed most of the mobs in the first round. I lost link from the spam (I wasn't the only one) got reconnected and had wimpied with about 200 hp left. There were about 3 pc corpses, most mobs dead. I think it took about 2 rounds to achieve.

We ended up hitting him one at a time after that, I think, and took it much easier.