(Dragon Ball Super Chapter 32)

Kale also participates alongside Caulifla in the Tournament of Power as warriors representing Universe 6.
Seeing Caulifla backed into a corner by Frieza, Kale lost no time taking down Darcoli from Universe 4 and rushing to her side.

(Dragon Ball Super Chapter 37)

Though Kale is at first able to use her impressive speed to put Frieza on the back foot, he soon realizes what he's up against, and Kale's true strength becomes apparent. It turns out that all along Kale had felt ashamed of growing stronger than Caulifla and had been hiding the full extent of her power.

(Dragon Ball Super Chapter 37)

Unable to bear watching the one-sided fight between Caulifla and Frieza, Kale goes into a rage and transforms into a Super Saiyan.
She gives Frieza a merciless beating with her new fearsome power, and even Goku, who had come to Frieza's aid, is surprised at her ever-increasing power.

(Dragon Ball Super Chapter 37)

Overwhelmed by her own vast power, unleashed for the very first time, Kale loses control and goes berserk. The explosive force of her Ki sends every warrior in the ring flying.

(Dragon Ball Super Chapter 38)

Kale grabs Ganos and Shantza from Universe 4 and drops them outside the ring, then defeats the giant Merged warrior from Universe 3 with a single kick.
She continues her rampage, taking down Zarbuto and Rabanra from Universe 2, then kicking Universe 10's Obuni out of the ring, causing four universes to be erased from existence, one after the other.

(Dragon Ball Super Chapter 38)

Just when it appears Kale might turn on Caulifla and her other companions from Universe 6, she takes the fight to the warriors of Universe 11.
However, her power is finally pushed to its limits, and she gradually finds herself in a losing battle.

(Dragon Ball Super Chapter 38)

As Kale is about to fall out of the ring, Cabba makes a last-ditch effort to put a Potara Earring on her, allowing Kale and Caulifla to fuse.

(Dragon Ball Super Chapter 38)

Now, as the Merged warrior Kefla, they battle on but are later sent out of the ring after trading simultaneous blows with Gohan.

(Dragon Ball Super Chapter 39)

First Appearance

"Dragon Ball Super" Chapter 32

Trivia

Kale is a legendary Super Saiyan?!

According to legend, a demonic Saiyan shows up once every 1,000 years in Universe 6. Seeing Kale's uncontrollable power, Cabba muses, "Maybe Kale is the legendary Saiyan...?"

(Dragon Ball Super Chapter 38)

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*All images are from the Japanese version.