Oh this isn't even a question:
Lieutenant Colonel (Major) Maes Hughes from Fullmetal Alchemist/Fullmetal Alalchemist Brotherhood!

I mean, who dosn't love this guy?
He is brave, loyal, kind, and absolutely Hilarious!
His love for his family, and wanting to share them with everyone elts, is probably what helps define his character! He truly thinks the world of them!
He is also not afraid to do what it takes to get a job done. He is a true friend to all that he meets and knows how to lighten any moment.
He also knows when it's time to be serious and when he needs to get a job done.
If there is any character I'd want as a best friend, it would defiantly be him! He is truley the best character in my opinion!
:)