Naruto: How Killer B Has Changed Throughout the Series?

gamerant.com:

Killer B is one of the most iconic characters in Naruto. After all, other than the fact that he is a Jinchuriki just like Naruto, his devil-may-care attitude amidst every tough situation is such a breath of fresh air to the increasingly heavy story in the latter part of the series.

That being said, just like everybody else, Killer B has gone through a lot during the time period around the Fourth Great Ninja War. So how has Killer B changed throughout the series? Is there anything that changed with this rapping Shinobi in the first place?

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The first time we truly get to see Killer B is when Sasuke and his team Taka infiltrate Kumogakure. Taka is part of Akatsuki at the time, and their first official assignment is to kidnap the eight-tailed Jinchuriki, which is Killer B. Sasuke, Suigetsu, Karin, and Jugo work together to attack Killer B, but the man himself seems quite relaxed and easily overpowers them all. B even has the time to write some rap verses in his rhyme book while fighting against Sasuke at the same time.

At first, Killer B uses his iconic seven-swords technique, but once he gets serious and enters the Bijuu mode, Killer B single-handedly annihilate Sasuke and Taka. In fact, if Jugo and Karin were not there, Sasuke would have already died. Sasuke needs to use his newly-acquired Amaterasu in order to incapacitate Killer B. Even then, he actually uses one of the eight-tailed tentacles as a clone of himself, while the real Killer B takes this chance to wander off into the outside world, away from the prying eyes of the village.

B was an orphan boy living by himself in Kumogakure. At the time, the village was looking for the new Junchiriki for the eight-tailed beast. In order