Light seems more INFP, because of his Fi aids his more deceitful side, and his compassion and ambition to attack any of his ideals. He could be a twisted one.. O_O he is obviously twisted, he honestly seemed more like a feeler, especially how he acted when he forgot the Death Note. If anything, out of the lead Ni, INFJ, but i still go with INFP, he is crafty but with developed Si, well put together. He was all about idealism!! An Idealist (not saying INTJs arent idealistic). Sticking with INFP, Idealist, Dreamer (he daydreamed alot), Fi-Ne-Si-Te (when he was stressed, it seemed his grip was very Te).