Baseball teams as Simpsons characters at the above link.
Here's a few:
Seattle Mariners - Barney Gumble - Struggling against their personal demons. Just when you thought they were going to clean themselves up and they were looking bulletproof, they suffered an unfortunate relapse.
New York Yankees - C. Montgomery Burns - Driven to success by an almost unimaginable wealth of resources, which they use to ruthlessly crush their enemies, although typically not by the most efficient means possible (blocking out the sun, Bernie Williams). Seemingly unaware of the (obvious) reasons why they are hated. They seem to have been a key actor in pretty much everything important that happened before 1970.
Boston Red Sox - Lisa Simpson - Beloved by all. Used to being overlooked and trod upon, so that when they finally get a day in the sun, they don't really know what to do with it. Unfortunate tendency to get a little self-righteous. Antagonistic relationship with those in positions of power.
Baltimore Orioles - Maggie Simpson - Never says or does much of anything, but constantly brought up in discussions by virtue of their close associates. Stubbornly hanging onto something disgusting despite other people's well-meaning efforts to take it away (pacifier, Sidney Ponson).