I think a millionaire could very well have a theme just imagine Bill Gates, Donald Trump, or Oprah Winfrey as crime fighters..
They would all probably have a theme that relates to promoting their company.
For instance Bill Gates would be known as "Windows-Man" (he would have the ability to manipulate anything run by computers like that kid from Heroes.)
Donald Trump would be known as "The Apprentice" his power would be precise, rutheless hitman skills. think james bond with better hair.
Oprah would be known as "Gluttony" a women with the ability to devour evil men by first enticing them with gifts.