After beating the iron knuckle, the armor starts to fall and it is revealed to be Nabooru, who has been brainwashed by the twin sisters, now Nabooru is Ganondorf's, assistant in apprentice but deep down she hates him, for his evil intentions, then Nabooru falls in all fours.

"W-wha... Where am I?"

Then Katoki materializes out of nowhere, and her headband jewel has the color blue which she has Cryonieses, the element of ice ❄️.

"Well... Well... would you look at that Koume... She's back to normal..."

Then Koume materialises too and her headband jewel has the color red which she has pyrokinesis the element of fire🔥.

"Even though she is a little girl she has a ton of respect and commands towards the Gerudo... Kotake..."

Then Kotake replied.

"Maybe we should make her work for the great Ganondorf a while longer! Hohoho!"

Then Koume replied to her sister.

"Then we can brainwash her again! HEHEHE!!!"

as both of them start to you their elemental magic Nabooru tries to run away but she's sent to the "Shadow realm, after beating the twins on their first phase, they start the merge with each other as Koume yells.

"Alright, Let's get Serious, NOW KATOKE!!!"

Katoke replies

"Oh, okay, Koume"

Right as they merge they say in unison. "KOTAKE & KOUME'S DOUBLE DYNOMITE ATTACK!!!" Transforming their 400-year-old old ladies into a beautiful woman who were in their 20s before she winked at you.

"Now let's see if a simple Hylian like you could defeat us, Twinrova the Gerudo sorceress sisters!!"

she raises her right arm to wave the broom/wand at you with the fire magic, and her voice sounds almost deep? And her appearance looked... Uhm... They're kinda hot in my opinion.