a popular and self reliant person who is ripped and dose not give a shit about the rules
Person 1: yo that guy Raiden over there is a gigga sigma
Person 2: bro mother fucker looked like he came out of baki god damn
Raiden: yo boys lets go hit the gym
A male that is extremely ripped, self reliant, and does not care about nearly anything
this was started by christian bale reacting to people that could be the next Patrick bateman when he came across Raiden Smith with a godly physic and could bench 550 pounds this man was the definition of him
person1: that guy is ripped
person2: dude he is a sigma combined with a gigga chad
person1:bro he is a gigga sigma