Super Gigga Nigga is a picture currently circulating the inter web. It is a picture showing a black man with no lower body who is beyond humanly "ripped". He has several heads coming off of his body hat are at the end of massive tentacles. He has several battle scars and a tattoo swastika on his chest. He has blonde super saiyan hair.
The Giga Nigga is equal to 1000 mega niggas, AKA beta niggas. They can run and grow quickly at will, while at the same time being elegant and masterful as they look down on those of lesser power. Snacking off the mega nigga and chocolate milk running though their veins, the giga nigga is very much so unstoppable except when compared to Tera NIGGAs, and bigger jumps sometimes.
The opposite of a niglet, it's a huge black man. Whether that means he's fat as hell or seven feet tall, it doesn't matter. Any definition of 'huge" will fit.