The Mountains, known as The Mysterious, is ruled by Leorio. This place is home to those who are unknown and prefer to remain on neither sides.
For relations, they have a good relation with the oasis as they protect them from bad weather with their caves. On the other hand with the desert lions, they aren’t on that much of good terms. As they don’t allow the desert lions to hunt on their mountain. Even if the desert lions have a hard time getting food.
As for traditions, only for the mountain lions, for one, they specifically for a few weeks(specifically five, more if they can’t get it)are taught how to see in the dark aswell as hunt on the rough the mountain terrian and climb them (Which they would be more naturally adapted for). Another is a seer for stars, to see what upholds to the next season.
Significant Pride Members
Leorio The King, Rengoku The next King in line, Mother of the night The Seer, and Saph The main and only Healer

The Oasis, also known as The Santuary, is ruled by Merlin. This place is home to those unwanted and is a safe place for all.
(Traditions)
As far as relations go with the other prides, the oasis has built a good relationship with the mountain pride. The Mysterious has allowed lions from the Santuary to take shelter within their cave systems during bad weather.
Significant Pride Members

(Overview)
(Traditions)
(Relations)
Significant Pride Members
Numarii was born into the desert her grandfather the original Numarii who was hoping to produce the perfect offspring. Numarii (The second) would've been the perfect offspring but she was a girl and therfore shunned by her grandfather. (Her parents never paid much attention to her.) Despite not being the ideal gender Numarii once she was old enough killed her grandfather overtaking the pride as her own. There are many things she is trying to fix within the pride. But her grandfather's hold on the pride still remained strong despite his death.