overdog
nounEtymology From over- + dog, modelled on earlier underdog.
1
someone who is dominant or has a significant advantage in their field
- Yet Truman, facing the resistance of his own State Department, was frequently irritated by Zionist lobbying and was wary of any sign of the Jewish underdogs becoming the bullying overdogs:2011, Simon Sebag Montefiore, Jerusalem: The Biography – A History of the Middle East, page 556: