TVLine lists five character additions that hurt popular shows

TV shows sometimes add new characters to attract viewers or refresh a series.

The article says some additions, including Scrappy-Doo and Doctor Who’s Adric, became unpopular with fans.

Scrappy-Doo may have helped Scooby-Doo’s ratings at first, but the show later focused so much on him that it dropped several familiar characters.

The examples show that a new character can change a show in ways its audience may not like.