Smartest Dragon Ball Z Characters

Besides having the combined knowledge of the two ancient beings King Piccolo and Kami, he also has all of the Namekian knowledge of Nail and his own earthly experience. With the combined intellects of at least 4 individuals and the time he spends alone in meditation, Piccolo is nothing short of a genius. Its his strategic mind that has saved Goku and his friends on a number of occasions. If he wasn't so focused on martial arts mastery, who knows to what ends he could put his mind?

Invented the dragon radar and a time machine.

An earthling that was able to create Androids that were even more powerful than aliens like Frieza. He was even able to turn himself into an Android. And created a biological being that consists of DNA acquired from the most powerful warriors in the universe. That's brilliant.

Gohan doesn't lack experience in battles, by 11 he surpassed his father and became, at that time, the strongest in the universe as buu was still dead or locked away and he even took on buu as well becoming the strongest unfused character in dbz as ultimate gohan. Also at 6 he went up against frieza, who was at the time undeniably strong, his name was enough to completely scare king kai and owned a galactic planet control organisation. At the time of the namek saga, nobody, not even vegeta would dare go up against him but yet he fought him took him down, before frieza went into his stronger form. Taking on cell, frieza and buu, being the strongest in the universe twice, ultimate gohan and super saiyan 2 gohan, I think that qualifies as the highest level of experience in the universe, even if in between cell and buu, he started to slack off a bit. He is very good academically and considered a genius, as well as being battle smart and being the captain for the winning team which is ...more

He's the smartest academically being a scholar, though he lacks experience in battles.

He can do Mathematics with ease and he could've possibly learned Multiple Languages while he was a kid, maybe Planet Vegeta has a different official language. You never know how he successfully learned how to speak Earthling?

He's very tactical and is a brilliant strategist, though his pride does blind his judgement at times, which results in his making false decisions.

He has 300 years' worth of experience. That's saying something.

He is a very good strategist and is fairly experienced and innovative during fights.

As experienced as Goku, but more innovative.

He is an angel who's probably been around for a long time, way longer than any of the people on this list, other than shenron, there is no one who rivals him in this category.

Whis and any of the other angel seem to be highly intelligent they already know stuff before most character realize anything. They are always having to explain things

He is a nigh-omniscient being enough said.

He knows a lot.

He is an all knowing, all powerful being who can grant any wish. No words on how smart he is.