Sing : The mouse in the suit was a thief!

He's being a busker on the street and a guy throws him a coin, and the mouse is so enraged that he feels he deserves so much more that he then proceeds to effectively rob the guy, using the excuse that the guy is holding back! That was so arrogant and amoral of the mouse.

But then later on he gets involved with mouse hookers and gangster bears, so I'm really not surprised at that point.

Why are you here if you haven't seen the movie yet?

Yep, the mouse and koala were completely amoral characters (the gorilla to a lesser degree as well).

They lie, cheat, steal, and tresspass without consequence. Then all their problems are sorted out in the end because singing.

This is a film aimed at 4 year olds (or the brain dead). With that in mind the characters need to be more wholesome, or have to face consequences for their actions.

I hated the mouse character,
Nothing good about him.
Frank Sinatra wannabee.