Cabba was tasked to find other Saiyans from Universe 6 to fight for "Dragon Ball Super" Tournament of Power. The remarkable similarities of Female Broly (now named as Calli) and Cabba is one evidence that they might be some sort of relatives. The theory about Calli being a Legendary Super Saiyan is also popular on DBS fans.
With the Tournament of Power starting, each universe needs to find 10 strong warriors to represent their homes. The latest episode of "Dragon Ball Super" has seen Cabba being tasked to find more powerful Saiyans. Where else will he find a powerful Saiyan than on Planet Sadala?
It is also a popular theory among "Dragon Ball Super" fans right now that Cabba and the female Broly are somewhat relatives. They both have the same jet black hair and thin body build. Cabba might be female Broly's younger brother. And with Cabba not knowing about Super Saiyan forms, it is possible that the female Broly is as clueless as him.
The female Broly, who is now called Calli, was first introduced on the Tournament of Power arc trailer. Her second appearance on "Dragon Ball Super" franchise is on "Dragon Ball Xenoverse 2", where she became an unlockable, Celebeat has learned. Her Super Saiyan transformation was bathed with green lights, her lanky body became ripped with muscles, and her pupils in her eyes disappeared.
Cabba must search someone more powerful than him, and if he happens to recruit Calli, there is a hint of how powerful Calli is in her base form. Cabba's Super Saiyan form was as same as Vegeta's base form, Comic Book reported. It can be assumed that Calli is a little stronger than Vegeta's base form. Now when she transforms into her Legendary Super Saiyan form, this could spell trouble for the Universe 7 representatives on "Dragon Ball Super" tournament of Power..