Kingsley is a high-ranking Auror working for the Ministry of Magic but when he starts to not believe the Ministry’s lies about Voldemort’s return, he is persuaded to join the Order of the Phoenix and he’s a real asset to them. Kingsley is one of those characters that doesn’t often say much but he’s like a steady presence in the background and when he does say something it is worth listening to.
The fact that he is well-regarded in the Ministry means that he is put in charge of protecting the Muggle Prime Minister. I love how the Muggle Prime Minister describes him as “highly efficient, gets through twice the work of the rest of them” which shows Kingsley’s work ethic even when it comes to Muggle stuff. But even though protecting the Prime Minister is such an important job, he takes the time to go to Dumbledore’s funeral and help Harry get to the Burrow because he believes that Harry is the most important thing.
I like Shacklebolt’s humour and how smart he is, you’ve got to be smart if you’re working as a double agent. He’s a great wizard who is brave and he is one of the few members of the Order of the Phoenix to make it out of the Battle of Hogwarts relatively unscathed.