What famous American military leader later became the 18th President of the U.S.?

Ulysses S. Grant

In "A Bug's Life", who is the leader of the villainous grasshoppers? What marine animal is known for long spiraled tusks resembling a horn? What animal uses its sensitive nose-star appendages for detecting prey underground What semi-hard Italian cheese is aged and commonly grated onto pasta dishes? What insect-like creature serves as the main enemy species in the Gears of War series?