Near and Mello, two successors of L in the manga and anime series Death Note, challenge Light Yagami's intellect and cunning in different ways. Near relies heavily on his detective skills, logical reasoning, and strategic thinking to outsmart Light. He is highly intelligent and observant, using these traits to analyze Light's actions and predict his next moves.
Mello, on the other hand, is more impulsive and aggressive, often taking risks and using unorthodox methods to achieve his goals. He challenges Light by being unpredictable and creating chaos in his plans. Mello's boldness and willingness to take extreme measures make him a formidable opponent for Light.
Overall, Near and Mello complement each other in challenging Light Yagami's intellect and cunning by utilizing their unique strengths and approaches to investigative work.