VIPER (acronym for "Venomous Imperial Party of the Eternal Reptile") is a hi-tech terrorist organization from Champions Online and one of the many enemy factions that cause havoc in the in-game world, having a desire to conquer the world and being willing to go to extreme lengths to do so: such as nuclear warfare or other potentially world-ending scenarios.
VIPER are under the command of the Supreme Serpent - who is one of the arch-villains of the Champions universe.
Despite being a military-based organization VIPER, like a great many comic book-inspired organizations, also dabble in black magic: this becomes a central plot in the "Serpent Lantern" adventure pack and introduces dangerous Serpent Mages to VIPER's already formidable arsenal of henchmen.
The Supreme Serpent is an arch-villain from the Champions universe and the grand commander of the entire VIPER organization - greatly feared even by his own organization he sees all and knows all when it comes to his troops and is known to punish even the smallest of mistakes with the most agonizing and horrible deaths he can conceive.
The Supreme Serpent seeks world-conquest and will stop at nothing until his goal is achieved, making him a deadly and fanatical opponent.
The Supreme Serpent is mentioned several times in the game and is a boss in the AfterShock storyline , due to his status as one of the planet's most dangerous supervillains it is likely he shall continue to be mentioned in future storylines and may even become once again become challenge for heroes.
The adventure pack (which are free content add-ons) known as "Serpent Lantern" focuses heavily on VIPER as well as the Supreme Serpent.
MechanisteMechaniste is a villain from Champions Online and he is allied with the terrorist group known as VIPER - he is a high-ranking member of said organization and heads the infamous Project: Awakening.
The Project's goal was to awaken psychic abilities within all members of VIPER and turn the group into an unstoppable army - Mechaniste worked day and night to try and ensure the Project went smoothly and was quite happy to challenge any heroes that infiltrated the base personally.
In fact when you finally face Mechaniste he is quick to attack and boasts that he has worked far too hard on his Project to allow you to ruin it - of course he is defeated regardless of this boast and Project:Awakening is put to a stop, presumably Mechaniste was imprisoned after this confrontation.