She has an important relationship with a certain character in the game.

The player can only move, or control one certain character in each level.

At different points in the film, certain characters meet others.

There are also things only a certain character can do.

They're just things that certain characters say, like you do in real life.

Is it not obvious they must be of a certain character?

"Certain characters come into their element in the open air."

An order is a group of families sharing certain common characters.

Similar things are done with certain important characters in the game and other locations.

Events that should have happened didn't because of a certain character's interference on history.