Hollis Johnson
The Long Island native has a long history on Wall Street, and was an early, vocal backer of President Donald Trump.
Scaramucci's appointment to the White House set off a firestorm of controversy that included the resignation of embattled press secretary Sean Spicer, the ousting of chief of staff Reince Priebus, and an expletive-filled interview that ultimately paved the way to his downfall.
Scaramucci has long been a household name on Wall Street, but was relatively unknown elsewhere until his wild ride at the White House. Here's a primer: