Team 7's instructor Kakashi Hatake is one of the most beloved characters not just in Naruto, but in anime as a whole. No matter how popular he might be, there will always be a few bits of Kakashi Hatake trivia that even diehard fans aren't aware of.
There are plenty of interesting things you didn't know about Kakashi to talk about, ranging from the meaning of his name and his mission stats to important details about his childhood and his powers that might have been forgotten. There's also information about what Masashi Kishimoto, the creator of Naruto, intended for the character - did you know that he was originally supposed to be a strict, serious samurai?
Which detail surprised you the most?
It's common knowledge that Kakashi is one of the greatest ninja in the Naruto-verse - but what exactly has he accomplished to earn that distinction? The answer can be found in the numbers. Kakashi has completed a grand total of 1,141 missions since the beginning of his career. 197 of those were simple D-Rank missions, 190 were slightly more complex C-Rank missions, 414 were B-Rank, 298 were difficult A-Rank, and 42 were S-rank, which only the most highly skilled ninja are trusted to undertake. If that's not impressive, nothing is.
Despite his frequent complaints of being overworked - and the fact that he's been on the job since before he could read - Kakashi isn't retiring any time soon. After a stint working as the hokage, Kakashi went right back to taking on missions. Sure, he's technically retired, but if he isn't actually going to stop working, that means little. Kakashi not only advises his former student, he also investigates problems on his own. No one can beat Kakashi when it comes to dedication to his job.
As an important character in the world of Naruto, it's only natural that Kakashi would be appearing in spin-offs - but it's not a given that he'd star in any of them. Kakashi Hiden is one of several spin-off light novels focusing on different characters from the Naruto-verse. The book details Kakashi's decision to let Naruto gain a little more life experience before becoming hokage, and take over the position himself until his student is truly prepared.
Kishimoto has also claimed that if Naruto were to ever receive another spin-off, his first choice for a protagonist would be Kakashi. The story would most likely focus on his years as a jounin, focusing on the missions that earned him the fame he currently enjoys.
Kakashi didn't debut his mangekyo sharingan until his battle with Deidara, but he could have used it much sooner. Actually, his mangekyo activated at the same time Obito's did - when Kakashi was forced to take Rin's life.
No one knows for certain why Kakashi waited so long to use his powers, but here are a few theories. The first is the most meta: Kishimoto simply didn't have everything about the mangekyo worked out yet. Another is based on how taxing using the sharingan is for Kakashi - because he isn't an Uchiha, using its powers drains most of his chakra and can leave him unconscious for weeks at a time. It seems logical that he'd want to avoid using it if it weren't absolutely necessary.