I've gotta go with Chief; wolves are my favorite animal in the game. I don't have Chief, but I have Kyle, Whitney, Wolfgang, and I'm working on getting Skye <3 Bruce is cute too, though.
Definitely Bruce. He's currently my favorite villager of the whole game, he took over the place of my former favorite villager, Lucky, who was my favorite for over 6 years. I love his color scheme, After School Jacket, house exterior & interior and overall design. His music is K.K. Blues which is also one of my favorite K.K. songs.
I adore Bruce for non acnl reasons. One of my managers at my job is named Bruce and he's known for being cranky. We absolutely adore him though. He had an accident last summer and is no longer working with us since he's doing months of physical therapy. He's an ex marine as well. We miss him a lot. I got my Bruce and have the catch phrase of ooh rah in honor of the marine phrase .