Thanks for the kind words.
Here is the list of the characters and the back story for the Nurgle forces:
Nurgle Rotbringers
Torglug The Despised: The Lord of Plagues
Mortanis: Sorcerer of Nurgle
Rahlad Wormwood: Lord of Nurgle
Nurgle Rotbringer background
Some said that the daemon Feceious Bladderspew was so disgusting that he floated due to the ground being repulsed by him, others that he was so full of the bloated, foul-smelling gases that he was born aloft by them. Still others said that it was his punishment for the amount of ground that he defiled that he was condemned never to touch it again.
Bladderspew took the form of an island and had floated around Ghyran vomiting forth pools of corruption over the vegetation and corrupting the surface.
With great difficulty he was tracked down. While destruction of the massive bulk was nearly impossible Sredni Vashtar, Lord Celestant of the Silver Shields, convinced the Dwarf Forge God to make a chain that would enable the Stormcast to at least tether the beast to one location so that his destruction could be limited.
With this chain hosts of Prosecutors descended on Feceious Bladderspew and pinned him in place. Many were lost to the great gouts of corrosive and pestilential emesis that the daemon vomited forth.
During the maelstrom of combat, Rimmon, Knight Venator of the Silver Shields attached the chain to an arrow and with the other end firmly staked in the ground, flew up and fired the arrow into the daemon. With the chain in place the Prosecutors broke off their attack and when Bladderspew moved after them the chain grew taut and pinned him in place.
Knowing that the chain that bound Bladderspew could only be broken by he who forged it the Silver shields left a small guard behind and moved off to continue their war against the forces laying waste the Realms of Life and Beasts.
With such a powerful ally imprisoned the forces of Nurgle had suffered a major set back. After several abortive attempts to break the chain that held Bladderspew, Torglug the Despised set his sorcerer Mortanis to find the secret of it. Scrying out not only the maker of the chain and the secret to breaking it Mortanis found where the Dwarf God was. So Torglug gathered a force around him and set off to Chamon to track down the Dwarf God. Even if the deity could not be compelled to break the chain, Torglug thought he knew a way to use him for that purpose anyway.