Intelligence: Average generally.
Extraordinary Genius in Combat (Although he lacks knowledge when it comes to things that aren't related to fighting, Goku is a master of prodigal skill when it comes to martial arts, with years of experience fighting against powerful opponents with a plethora of abilities. As a child, he was able to beat martial artists on such a level as
Grandpa Gohan, who was stated to be an
unparalleled master in all martial arts on Earth, with
martial arts in Dragon Ball exceeding real life towards Dan/Level 30 where there is only 10. In his battle with Master Roshi,
was able to copy and improve upon a technique on sight, later in that same battle once faced against the Sui-Ken,
a martial art he couldn't copy because he had never experienced inebriation, Goku
generated and created his own style known as the "Crazy Fist" in response to perfectly counter it off the top of his head, with these styles even
specifically noted to be a variation of Kenpo. At this point should be so skilled he's beyond 22nd World Tournament Roshi and Tien,
the former of which having such mastery his movements, energy, and breathing have no ineffiency, and the latter being able to detect this merely via observation of scant attacks whilst his future foe was suppressed. Learned
predictive movements and enemy reading in merely three days and was able to immediately apply it in combat. His skill when it comes to
combat and the usage of Ki allows him to replicate other Ki-based techniques after seeing them once, and he was the first to realize how much energy the Super Saiyan transformations unnecessarily drained. Despite this drawback, he was the first to master the Super Saiyan state, making it highly efficient and subsidizing the need to reach a higher grade, which decreases speed as a side effect. He is a genius in combat and is capable of devising new applications of his techniques on the fly, such as using Kamehameha with his feet, and Goku's
training with King Kai was directly noted to be worth thousands of years of his prior accomplishments, experience, and skill. As a Saiyan, he
has a natural sense for battle and adapts to it quickly. He as able to go toe to toe with
Cell, a being created by the genius scientist
Dr. Gero to be the ultimate warrior, taking the DNA and footage of every fighter on Earth and on Namek,
copying their techniques, their mannerisms, and their skills to create him, including Goku himself, also having knowledge on how he approaches battle as well, down to real-time strategy, something that despite using an advanced supercomputer capable of creating machines with limitless stamina capable of destroying planets and stars for the task, still took 20 years. Cell was
even noted by others to perfect the martial arts and techniques of those who comprised him such as Tien's Multiform Technique, removing their flaws, and yet Goku was able to face four copies of Cell whilst their physical ability was identical off of his own battle intelligence and skill.)