From his childhood days, Orochimaru was identified as a genius shinobi and a once-in-a-generation prodigy. During his lifetime, his associations with powerful shinobi and groups, such as his tutoring by the Third Hokage and his stints with both the Root and Akatsuki organisations, as well as his later solo exploits into gaining knowledge, allowed him to develop and gain access to vast amounts of information. 

 

  Orochimaru is a master planner and manipulator. For years, he evaded capture from both Konoha and the Akatsuki, all the while setting up a network of fully supplied hideouts throughout various countries. He was also able to manipulate the entire village of Sunagakure into invading Konoha, by posing as the Fourth Kazekage without anyone noticing, having killed the real one weeks before the invasion. He was capable of manipulating multiple people into becoming his willing pawns and guinea pigs for his experiments, using a combination of manipulation, insight into a victim's past and the promise of power to gain their loyalty. The greatest examples of this are Kabuto and Kimimaro, who idolised the Sannin and showed nothing but absolute loyalty and respect for him. He even developed a fail-safe in case he was ever killed or sealed in the form of his cursed seals. At some point in time, Orochimaru and Kabuto learned that Tobi was not the real Madara Uchiha, although it would ultimately be Kabuto who would use this knowledge to his full advantage. 

 

  This wealth of research has proven to have devastating effects long after Orochimaru's sealing, as seen through Kabuto's performances during the Fourth Shinobi World War. Due to this research, he is easily capable of deducing the workings of an enemy's techniques and fighting style.