Ambitious Admiral
Big Boss
Colossal Chief
Dominant Director
Enlarged Employer
Full Foreman
Grand Governor
Huge Honcho
Immense Insurgent
Jumbo John
Key Kingpin
Large Leader
Mega Manager
Oversized Overseer
Portly Proprietor
Roomy Ruler
Supreme Supervisor
Tremendous Topdog
Vast Viceroy
Whopping Warrant