a mike
Mike is the guy who will love you, protect you, and laugh at your dumb jokes. He's also the guy who will argue with you about everything and still be there when you need him.
My best friend is a Mike. He'll laugh at my dumb jokes and still argue with me about everything.
My brother is a Mike. He'll be there for me even when I'm being a total idiot.
My friend's dad is a Mike. He's the guy who will be there for you through the good, the bad, and the bleh.