John Adams as portrayed in 1776. He's universally thought of as "obnoxious and disliked"note how Adams himself reported it in his writings years later, but probably subject to Unreliable Narrator and eschews politeness in favor of getting independence declared now and right. However, he really believes in freedom for all Americans, including slaves, he deeply loves and misses his wife Abigail, and is sympathetic enough to Jefferson missing his own wife to call her to Philadelphia.
Benedick in Much Ado About Nothing is a fountain of snark who pretends to be a He-Man Woman Hater, but as soon as he is convinced that Beatrice is in love with him, he softens up instantly. He is also the only male character (other than the friar) to believe in Hero's innocence when she is accused of cheating on Claudio, rather than siding with his male friends as even Hero's father does.
Frank Church of Yes Virginia: The Musical is pessimistic and a curmudgeon who proclaims at the beginning of the show that he hates Christmas. He takes positive glee in crumpling up Virginia's letter and mocking her lack of maturity at eight years old. And yet, he then writes the famous editorial indicating that there is no proof that Santa Claus is not real and that indeed, the world would be a very sad place if he were not.
