There's only one true duo. It's the best one the modern world has seen so far and it contains the two most dangerous guys on earth. One is Qaiss and the other one is Deni. Apart from these two berzloy, their nations are known for their immense will power and fighting abilities too. So it is only logical that they are the best duo.
Person A: Bro, I messed with Qaiss and Deni. Can you help me?
Person B: Even though you are my brother, I wish you good luck at surviving the upcoming danger.
The best duo.