Once they were Brothers.
Two sons of a powerful Crime Lord who had adopted Ninja Tactics into their organizations culture: Stealth, Survival, and Loyalty to the Clan above all else.

Keep their movements in the dark as black as night and so mysterious they become like myths. Choose Strategy and Misdirection rather than a direct approach so nothing can be tied back to the family.If all else fails, the Family's survival is more important than the individual and one must be willing to do whatever is necessary for the Clan, even if it costs their own life. Be smart and don't let it come to that.

Kecleon is the more traditional brother. He cared about the history and traditions of historic Ninja clans and wanted to embrace more of these traditional skills and teachings as well as spirituality

Crobat is the more ambitious brother. He still uses the Ninja Tactics and aesthetics but only as far as they are useful to the gang, and cares more about the results than the practices themselves. He believes the world has changed from how Ninjas operated in the past and so their practices need to change.

During a mission Kecleon was injured and abandoned. Their father believing his son had died stepped down from head of the Organization and passed it over to Crobat, but Kecleon was not dead. He suffered amnesia and came to believe he was actually a historical Ninja slowly trying to piece together who he was and what had happened to him. He then discovered a criminal gang using the imagery of the Ninja and the horrible actions they had committed, so he dedicated himself to stop them unaware they were his own mislead clan!

His brother discovering Kecleon had attacked their clan believed he had turned traitor and wants to usurp him for claiming the role as head of the clan while he was missing.