No one is without Ego

Ego is present in everyone.
No one is without any ego at all.

As Sant Tulasi Das said:
      Nahin kou as janmaa jag maahin
      Prabhutaa paayi jaahi mad naahin
              (Ram Charit Manas - Bal Kaand)

There is absolutely no one in the world who does not develop ego -

whose ego does not rise after getting some power and authority.

In fact, the bigger the status, power, and authority -  

the greater is their ego.