Better Nether (Concept) Add-on for Minecraft PE adds Nether dimension, new mobs, new items and new blocks. Many mobs will change, For example hourses will replaced by undead hourses; creepers will replaced by some mini boses, who are very difficult to kill.
Look at the screenshot below. You will see graphic of new dimention Nether, some of new undead mobs and also new blocks
how do you like these mushrooms?
nether man trades
on the screnshot below you can see some of new items
download addon for Minecraft Pocket Edition 1.6/1.7 +