Can be tamed.
Located in Sahket Wastes, Uldum. This black scorpion may appear (rarely) in a number of locations in the Sahket Wastes in the original (pre-N'Zoth Invasion) phase of the zone. Speak to Zidormi in Ramkahen if you need to switch time phases. In addition to this colour there are four other versions of Madexx that may appear, each with its own colour and ID: Madexx (brown), Madexx (red), Madexx (green), and Madexx (blue).