As for Kisame, he remained relatively neutral.
Although he was a rogue ninja, Kisame was extremely loyal.
As long as his faction didn’t betray him, he would never betray them back—even if it meant death.
Nagato’s betrayal of the Akatsuki was an undeniable fact.
The new leader, Uchiha Madara (Obito), was quite famous and had never betrayed Akatsuki before, so Kisame chose to stay.
“Nagato betrayed us, wasting all the help you gave him back then. From what I know, if you hadn’t helped treat him, he would have died long ago from overusing the Rinnegan.”
Obito lightly tapped the stone table with his fingers.
“If you don’t accept me as leader, I can hand you the position. In terms of seniority, you’re no worse than anyone here.”
Obito wasn’t flattering him.
Just talking about capturing tailed beasts alone, Su Xiao first captured tailed beasts alongside Deidara and Sasori.