A link between eras.

I apologize, I'm not very knowledgeable about the lore of Heroes, and I have a question: why did King Bracadum go mad? Is this also an alternative storyline? And why is he normal in the fourth game (his plan to establish peace throughout the world is harsh, but it can be understood – he has seen TOO many wars), but even if he did go mad, he's a strange madman – sometimes he wants wars, sometimes he doesn't....