Charlie

Background
Charlie started out on the streets, but when he met Bark, the two started a duet group. Charlie created the lyrics and sung the songs with Bark as a background singer. Later down the line, Bark decided to steal Charlie's songs, and hired Roland, a dog catcher, to put Charlie in the pound.

Personality
In the beginning of the movie, Charlie is shown to be pessimistic and a loner. When Charlie and Tiny escape from the pound, Charlie is shown to have a sympathetic side when he saves Tiny from being captured by Roland, the dog catcher. Due to his musical career, it can be assumed that Charlie likes to take his own life by the reins.