Leper gnomes are a subrace of mutated, diseased and twisted gnomes from Azeroth. Since the irradiation of the gnomes' fabled capital, Gnomeregan, they will attack anybody who dares or attempts to enter the city.
When Gnomeregan was invaded by the troggs unearthed from the titan facility Ulduman, Gelbin Mekkatorque ordered the pressure valves to be turned on which let out a toxic radiation throughout the city. More gnomes were killed than troggs when radiation floated through the Gnomeregan air. The surviving gnomes evacuated to the dwarf capital city of Ironforge. Mekkatorque had to deal with the guilt. Something more horrible happened, gnomes left in the city became heavily mutated and went insane.
This changed them to leper gnomes. Their skin is changed to green due to being sick and their eyes have a strange light green glow. Sicco Thermaplugg and his leper gnomes took Gnomeregan for themselves. They kept fighting the troggs with their sickly bodies. Currently dark iron dwarves and the troggs still inhabit the city which makes adventurers question if Thermaplugg has an alliance with those underground races. recently leper gnomes have been found along the large desert of Uldum's coast.
Forsaken-aligned leper gnomesEdit
Other than Sicco Thermaplugg's leper gnomes, a number of these gnomes have joined the ranks of the forsaken. The level of trust they receive from Undercity's upper echelons is dubious, though it appears that having "bent the knee" to the Dark Lady has made them "one of us" in the literal sense at least. It is believed because of their diseases status that they have earned sympathy from the forsaken.
It should be noted that most of the forsaken-aligned leper gnomes are in the Royal Apothecary Society, or at least in a assistant level. These leper gnomes seen do not hold much authority.