Jaguar D. Saul, the chad who rebelled against corrupt World Government.
Even Akainu, which is not part Will of the D., already had enough with Gorosei and ended up questioning and yelling at them.
Meanwhile Garp the Fraud, Daddy of Coward, Grandpa of Garbage, despite being a D., never did anything against World Government and kept being their corporate dog. The fraud only dared bitching behind their back, but ultimately never did anything.