He was responsible for every single incident Ichigo and others faced in their life. He doesn’t need to use his brain or strength to win the Squid Game as he is a Shinigami.
1
One of his specialties is unlocking people’s “monsters”, exposing their inner darkness and making them accept it. Afraid, guilty, regretful, lonely, or in pain, he feels no emotion..
2
He could read the emotions of people accurately and can also manipulate them to use them for his own benefit. Hs fighting skills are better than Yuuichi’s
3
He can manipulate his friends and use them as a tool. He reads the situation and makes instant plans which makes him ahead of everyone.
4
At the age of 13-years, he had an IQ of over 200, which itself states how intelligent he is. He was the Chief Strategist of Hidden in the Leaf Village during the fourth great ninja war.
5
Near looks childish in appearance but is intelligent. He views his investigation like a puzzle and solves it. He later becomes the head of SPK and keeps his hunt for Kira.
6
He is so intelligent that he was able to hide from L and the police even when they installed the camera in his room.
7