Mr. Accuse is an ordinary person and likes to accuse people of things that they usally did not do. For example, every Thanksgiving, he accuses Mr. Broque of murdering the turkey. He works as a private detective (not very successfully)
Mr. Accuse was added pretty early and has progressed to be a commonly used character.
As soon as he was born, Mr. Accuse started accusing people. In fact, the first thing he did was accuse the doctor of trying to make him permanently blind with that bright light. At age 20, he decided to be a private detective but his tendency to jump to conclusions has made his business decrease in popularity. Also, Mr. Detective just opened a business next to his.