With the close of Jojo's Bizarre Adventure's Sixth part, Stone Ocean, fans can look back at a long line of Joestar heroes who proved their strength and intelligence against formidable Stand users. Fans often debate who is the brightest JJBA character, as many protagonists and antagonists engage in witty battles.
Harry Potter's Hermione Granger is one of the sharpest characters in popular media. Her book smarts are unmatched, she thinks quickly on her feet, and she always has a clever solution up her sleeve. Hermione is a perfect standard by which to judge another character's intellect. From the Joestar heroes to the vampiric villains, some characters could outsmart even Hermione.
10 Lisa Lisa Hunted Her Husband's Killer And Trained Joseph Joestar
Lisa Lisa is Joseph Joestar's mother, though she doesn't raise him. After uncovering and killing her husband's murderer, she has to go on the run. When the Speedwagon foundation discovers the Pillar Men, Lisa Lisa returns to train her son in Hamon, as she is one of the best Hamon users in JJBA.
Not only is Lisa Lisa able to keep up with her genius son, but she also schools him more than once. Lisa Lisa keeps up with the Red Stone of Aja, the Pillar Men, Hamon, and her secret identity. Furthermore, she is savvy enough to survive encounters with the Pillar Men, a feat even Cesar Zeppeli could not achieve. Lisa Lisa would prove shrewder than Hermione, thanks to her breadth and depth of experience.
9 Robert E. O. Speedwagon Started A Scientific Research Foundation
Robert E. O. Speedwagon is an eccentric character who meets Jonathan Joestar in London. Speedwagon tries to rob Jonathan, but when the young Joestar showcases his strength and purity, Speedwagon joins the hero. In the end, Speedwagon founds a business that would go on to monitor vampires, Pillar Men, and Stand users.
Speedwagon has a far-reaching legacy, and his scientific exploits help pave the way for the Joestar protagonists to fight their foes. Without the Speedwagon Foundation, the Pillar Men, Dio, and many other evil Stand users would still be running around. It is possible that, after all the research Speedwagon and his team conducted, he would prove more clever than Harry Potter's most intelligent witch.
8 Noriaki Kakyoin Was One Of The Show's Best Battle Analysts
Like Hermione, Noriaki Kakyoin is a school kid who is wise beyond his years. Throughout Jojo's Bizarre Adventure: Stardust Crusaders, he proves himself a skilled tactician and formidable battle analyst. He figures out many of the evil Stand users' secrets. For example, he learns about the Sun's mirror cloaking and the Hanged Man's reliance on reflective surfaces.
Hermione is renowned for being quick-witted, even in battle. She is calm under pressure, as seen when she remembered the key to the Devil's Snare plant in The Sorcerer's Stone. Kakyoin is similar, but he has overcome many more puzzles and tricks in the heat of combat. Fans regularly debate whether he is the smartest Stardust Crusader character altogether.
7 Bruno Bucciarati Was A Skilled Tactician
Bruno is one of the smartest Golden Wind characters, alongside Giorno Giovanna and Diavolo. As one of the most lauded tacticians in Golden Wind, he is the leader and namesake of Team Bucciarati. On top of that, his Stand is highly versatile, meaning it takes mastery, a vast working memory, and complicated strategizing to wield.
Furthermore, Bruno can detect lies by looking at others, a feat few could claim to have. His tactical prowess and intuition proved he was both book smart and perceptive. Meanwhile, Hermione Granger struggled to achieve the same level of intuition as shown when she hopelessly failed divination.
6 Giorno Giovanna Could Outsmart Bruno and Diavolo
Giorno Giovanna often tops the charts for most intelligent protagonists in JJBA as he overcomes Passione's boss, Diavolo. Fans even debate whether Giorno could outsmart Joseph Joestar, considered the series' genius.
What makes Giorno's win against Diavolo so impressive boils down to the nature of their Stands. Both Stands have effects that warp time and space, meaning their actions are difficult to manage. In addition, the reach of their abilities is tough to predict. Yet, Giorno comes out on top and becomes Passione's new boss. Hermione faces similar issues when she has the time turner. She is almost unable to remedy the mistakes she makes with it.
5 Kars Became The Ultimate Life Form
Kars is the leader of the Pillar Men, and his plan to take the Red Stone of Aja and use it to become the Ultimate Life Form is brilliant. He goes up against Joesph Joestar, who many deem the smartest Joestar, so he has his work cut out for him. Yet, he can alter his plans on the fly, coming up with strategies that give even Joseph a run for his money.
In the end, Kars is too confident, leading him to underestimate Joseph. Hermione falls prey to this folly, too. She tries to track down the basilisk alone in The Chamber of Secrets, and she once turned herself into a cat-human hybrid after using the wrong polyjuice potion ingredient. However, Kars' mistake came from his thousands of years of experience in which he was the strongest being alive.
4 Kishibe Rohan Has An Artistic Mind
Kishibe Rohan may have help from one of JJBA's strongest Stands, but many of his wins come from his impressive intelligence. Not only is Rohan an artistic genius, but he is also a skilled strategist and an intuitive person. Thanks to his Stand, Heaven's Door, he can literally read people like a book, and in doing so, he gains a unique outlook on humanity.
Rohan is also practically intelligent, allowing him to help the Joestar team combat evil Stand users and uncover their plots. Hermione may have book smarts, but she does not have the renaissance-man qualities that Rohan boasts.
3 Dio Brando Tricked Multiple Jojo Protagonists
Dio Brando is a villain whose terror spans multiple parts, which is more than most JJBA antagonists can claim. He did so because he is so intelligent and resilient. He is always one step ahead of Jonathan Joestar, the series' first protagonist. No matter what Jonathan does, Dio always seems to have a counterstrategy.
In Stardust Crusaders, Jotaro Kujo and Joseph Joestar work together to defeat Dio. It takes the combined power and wit of the two strongest Joestars to succeed in finally destroying Dio. Fans rank Dio among the smartest JJBA characters. Hermione rarely has to fight a foe more clever than herself as Dio does in Stardust Crusaders.
2 Jotaro Kujo Was A Scientist And Battle Strategist
Fans often struggle to compare Jotaro and his grandfather, Joseph Joestar, as they are both bright and powerful. At first, Jotaro is rude, rash, and unwilling to work with others. However, Jotaro matures throughout JJBA, and by the end of Stardust Crusaders, he is one of the most powerful characters in the series.
Jotaro is an excellent tactician, but one thing he has over Hermione Granger is his ability to bluff and see past others' deception. The series describes him as brilliant, but this extends to more than just book smarts or wit. He is also wise, intuitive, and street smart.
1 Joseph Joestar Is Considered A Genius
Joseph Joestar is the genius of the franchise. He is so clever that he can predict what others will say before they know. He always has a plan, and even though his Stand has poor combat potential, he overcomes most foes thanks to his problem-solving skills and ingenuity. He is also smart enough to run away from fights when he knows he is in over his head, though that becomes a reason fans hate Joseph Joestar.
Furthermore, he spends years helping the Speedwagon Foundation gather intelligence and conduct research on artifacts, Stands, and Stand users. While Hermione has book smarts and quick thinking, Joseph Joestar has that and more. He regularly proved his genius-level intellect, wisdom, and perceptiveness.