A Nintendo Clan, based off of Error Code 20102, which is the error code that Nintendo destroys you with by hacking online their gaming servers. EC2 is one of the largest clans that exists for MKW, and also plays other Nintendo/Mario Kart games.
EC2 is still active, and is 7 years old as of May 2016.
A Nintendo clan full of Mario kart hackers and some splatoon hackers.
Person 1: Hey EC2*MARio looks friendly
Person 2: he is a hacker