The grower, Gerald Fowler of England, spent over two years developing the new pepper. It was created in Cumbria, a small county in England and is a 3 way cross of the Naga Morich, Bhut Jolokia and Trinidad scorpion. The Naga Viper has an interesting background. The Naga Viper pepper is a hot chili pepper.In 2011, it was recorded as the "World's Hottest Chili" by the Guinness World Records with a rating of 1,382,118 Scoville Heat Units (SHU), but was surpassed in SHU by the current world record holder the Carolina Reaper in 2017. The Naga Viper is a cross between three peppers: the Trinidad Moruga Scorpion, Naga Morich, and Ghost pepper. The Naga Viper burst onto the scene in 2010 as the newest member of the Naga pepper family. Some even say that the 7 Pot pepper was also involved in the creation of the Naga Viper. This is the Matthew Arthur strain. Scoville Heat Units were tested at 1,382,000 SHUs.. Purple Viper Naga is one of the most beautiful chilli plants we ever have seen. The plant looks like a little tree with purple stems and dark green leaves with a black tinge. The “Ghost Pepper” pepper (Solanaceae capsicum chinese), also known as "Bhut Jolokia" or "Naga Morich," is considered one of the hottest peppers in the world. Purple Viper Naga C. Chinense.