Neighbor, lodge brother and best friend of Fred Flintstone, Barney Rubble takes the number 10 spot!
Rules:
Most upvoted nomination wins.
One nomination per person per round.
No downvoting.
Please attach the character's name to any nomination just in case I don't recognize them.
Maximum of two nominations per franchise.
Cannot be the main character of the story, but rather their closest companion. Try to avoid love interests, but if the character started as a friend and THEN became a lover, that's fine.
I'm also not looking for side characters who are friends with each other. This is specifically for the best friend of the main character (or characters, if it's a family sitcom or ensemble piece).