Kek is the Ancient Egyptian God of Primordial Darkness (Chaos). He is visualized as the Pepe meme. Numbers, Chaos and Meme Magic are his speciality and he goes hand-in-hand with Thoth. Plus who doesn't wanna play as a FROG GOD.

Sources:

https://pepethefrogfaith.wordpress.com/​

https://www.reddit.com/r/Smite/comments/5yucnh/god_concept_kek_the_primordial_darkness/​

https://en.wikipedia.org/wiki/Kek_(mythology)