When attacking Goku, Kefla moved so fast that Goku did not notice her movements until after she appeared behind him.
When charging it, the energy spheres mix up forming a spinning disc of Ki in each hand before firing them in the form of massive energy waves.
The powered-up Super Saiyan 2 Kefla charging a Gigantic Burst When cornered by Goku, Kefla went through a fight or flight response and awakened a new unpleasant power, which Vados referred to as her "final weapon", and she became surrounded by ki that fired in all directions and was fast enough to graze Goku with her attacks.
- Kefla releases her aura strongly enough that fires powerful laser-like flashes omni-directionally.
In the manga, due to fusing when both the fusees are in Super Saiyan form, she is permanently stuck in this state and could not power down to base form during this merger's time frame.
However, despite her immense confidence in her power, Kefla does seem to retain some of Caulifla's respect towards Goku.