Pretty simple. Someone proposes a comics character that was either an utter failure, a laughing stock, a Mopee, a character that's had a hard time finding a good direction, or something similar. Someone else takes their best shot at breathing life into said character and making him/her more interesting. Then that poster tosses out a new character.
If you want, you can completely reinvent the character, or simply come up with a new direction.
To start, I'll throw out a personal favorite that most people revile: Razorback.