Kakashi Hatake, leader of Team Kakashi or better known as Team 7, is one of the more notable jonin-ranked ninjas in the Hidden Leaf Village. He even rises to become the Sixth Hokage after the events of the 4th Great Shinobi War.
But, before becoming Hokage, Kakashi didn’t have a comfortable life. His father, known as the White Fang of the Leaf, killed himself, leaving a young Kakashi to fend for himself. The circumstances of his father’s death also left a lasting impression on Kakashi, turning him into someone who follows the rules no matter what.
However, one of his teammates on Team Minato, Obito Uchiha, changes Kakashi’s outlook on the world. When Obito dies to rescue both Kakashi and their other teammate, Rin, he leaves one of his Sharingan and his Will of Fire to Kakashi.
From this point on, Kakashi realizes that rules aren’t meant to be followed absolutely, especially when following them means leaving behind one of your comrades. The Sharingan he received from Obito also replaces the eye he lost earlier in the war. The gifted eye turns Kakashi into the top-level shinobi for which he’ll later be known.
However, Obito wasn’t the final friend Kakashi would lose. Later on, Rin also dies, but this time by Kakashi’s hand. And, with the birth of Naruto Uzumaki, Kakashi finally loses the final member and leader of his team, Minato Namikaze.
After working amongst the ANBU team for several years, Kakashi is eventually placed in charge of his very own genin squad, because the 3rd Hokage believes it will be good for his mental health. However, due to his childhood experiences, Kakashi fails every single one of his squads for not working as a team.
Kakashi Hatake has an affinity for Lightning Release, but he can also use Water, Earth, Fire, Wind, Yin, and Yang release as well. With his Lightning release, he developed a jutsu known as Chidori when he was younger. However, this was considered an incomplete jutsu until he received his Sharingan because he was unable to control it.
And, it’s his Sharingan that sets Kakashi apart from anyone else. Yes, there are a couple of other Sharingan users around, but thanks to Itachi Uchiha murdering most of the Uchiha clan, just owning a Sharingan is enough to make a character unique.
Through the use of his Sharingan eye, Kakashi has copied thousands of jutsu from friends and foes alike, earning himself the nickname of Copy Ninja. Being one of his biggest strengths, as it allows him to call forth a vast number of unique jutsu, as well as defend against jutsu in real time.
His Mangekyō Sharingan also has a unique ability called Kamui, which opens a portal into another dimension. This portal is useful whether on the offensive, defensive, or providing support.
Finally, Kakashi Hatake also has a summoning pact with some ninja hounds from an unknown land. The largest of the ninja hounds is useful for offensive attacks. The summoned ninja hounds mainly function as his tracking team.
As a primarily close-range fighter, one of Kakashi’s most significant weaknesses are ranged attacks. However, his Kamui can be used to either intercept incoming projectiles or damage a target at range.
That said, his Kamui alone isn’t enough to make up for this weakness due to the amount of chakra it uses.
But, how about match-ups in which he’s successful? Compared to the majority of other close-combatants, Kakashi comes out on top only due to how he’s able to use his Sharingan. Not only can he read the moves of his opponents, but he can copy them too.
However, if he’s up against someone like Might Guy, his Sharingan is less effective because he can’t keep up with the speed or power of Guy’s attacks. But, that’s the thing about Kakashi, he’s a tremendous jack-of-all-trades, but there’s always someone better than him at each element.
There are not many other characters he would be in a terrible situation fighting against, but there’s also nobody who he would completely outmatch thanks to any skills he has.
So, if Kakashi is neither the best nor worst at anything, that means he could theoretically be a decent member regardless of the overall composition of a team. And, this is backed up by evidence directly from the series.
While a member of both Team Minato and Team Kakashi, he primarily fulfilled the same role of both team leader (when Minato wasn’t around) and jack-of-all-trades. However, he’s also been on teams such as the Eight Man Squad, where his tracking skills came into play.
And, despite his skill in combat, his ability to track down enemies, missing allies, or just about anything else is probably the best role he can play on a team. Due to this, some of the best teammates for him would be Shino Aburame or Sai due to their abilities to scan large areas in a short amount of time.
After the general direction of the target is located, Kakashi and his ninja hounds would be able to follow them to the ends of the Earth. However, Kiba and Akamaru wouldn’t necessarily be good teammates because they overlap a bit too much with Kakashi and his dogs.
It should also be noted, that Kakashi doesn’t need to be paired up with a medic of any sort. He doesn’t often put himself in situations where he’d be seriously injured, and if he’s part of a tracking team, a medic is needed even less.
As for someone from another village who would pair well with Kakashi, Ao of the Hidden Mist would be a solid choice. Not only does he have experience tracking down missing-nin, but he’s also in possession of a Byakugan to compliment Kakashi’s Sharingan.