The confrontation leads to Konan offering Hidan the chance to join their organisation, to which he accepts, After joining, he was partnered with Kakuzu, and tasked with capturing the Two-Tails jinchūriki.Some time later, Hidan and Kakuzu met with Sasori and Deidara to discuss their new missions assigned by Akatsuki.After joining the Akatsuki, he remained with no shirt, but bears the organisation's cloak, which he kept slightly opened, revealing his Yugakure forehead protector around his neck and Jashin amulet.He changes his bottoms to grey pants with matching shinobi sandals.Despite this, he reacted "normally" (that is, he didn't enjoy the pain) to being injured by someone else, or when the opponent didn't share the pain.Hidan's behaviour in the anime bordered on insanity; he was frequently heard shrieking loudly while attacking, and laughed maniacally when he was about to kill Asuma Sarutobi.He rarely used honourifics when speaking, and, even then, usually as a form of sarcasm, for example when he called Deidara "Deidara-chan".He was the only member of Akatsuki who did not respect their leader, Pain, and openly declared his willingness to kill him around others.
In the anime, after being recreated, Hidan stated that being controlled by Kabuto Yakushi was the worst.
The only respect he ever seemed to give was to his god, and, even then, he was quite willing to use his name as an insult.
He openly held his partner, Kakuzu, in contempt for his habit of blasphemy, love of money, and Kakuzu's frequent ridicule of Hidan's religion and battle style.
Although ridiculed for his foolishness by Kakuzu and Shikamaru alike, being obviously inferior in tactical genius to either of them, and even admitting that he was not very intelligent himself, he was able to analyse the nature and limits of Shikamaru's Shadow Imitation Technique, and conducted battle accordingly (though he retained his arrogant attitude even under these circumstances).
Interestingly, he seemed to panic when Shikamaru took control of his body, shouting at Kakuzu to do something in a rather frantic voice.