To gain a spot for their sisterfamily Hattrickelli shot Corleone based Gotti, who themselves had started on a spot that was left open after the war between Leviticus and Marazzino and Truva.

Gotti was an obvious target, because they were one of the few small families on the bottom of the statistics that were not part of another family, or had big bloods for the shooters to worry about.

However small, Gotti did not go down without a fight, the first wave of Hattrickelli's shooters mostly failed or died in backfire.
But in the end they didn't really stand a chance, and Hatrickelli is able to start their sisterfamily Hattrickeros.

In contrast to what most believe 'eros' does not stand for Kerberos, but it's more of a Spanish equivalent of '-ians', as in Coccadians.