In the anime
Rebecca Forester made her debut in EP004 with Katie who wanted a best vote in a test. After being possessed by Tattletell, Katie confused to her mother she didn't get the highest vote score and was afraid her mom would be mad at her. Rebecca eased her worries away stating she'll never be upset and was very proud of her daughter for telling the truth.
In the games
Rebecca Forester first appeared in Yo-kai Watch. If Katie is picked as the main character, Rebecca will be the player's mother. Her role would be to make meals for the player if they ever talked to her during the afternoon in-game time.
In the second chapter, when Katie returns home after first acquiring the Yo-kai Watch and meeting Whisper, she finds his parents having an argument over the housework. Rebecca accuses her husband of not helping her with it at all, leaving her to do everything.
Katie soon discovers the reason for their sudden irritation at one another is Dismeralda, who has inspirited both of them.
With the help of Jibanyan, Dismarelda is defeated, and once her husband, Happierre, shows up, she calms down and apologizes.
After being freed from the Yo-kai's influence, Katie's parents apologize for their behavior, promising to help and respect each other more from now on, and the chapter ends with the entire family preparing dinner together.
If Nate is picked as the main character, Rebecca's role is much smaller, but she can still be found in Katie's house and can be talked to.
Katie is her daughter.
Jason is her husband. They're shown to be very affectionate with one another, usually. Whisper notes that they're so loving, its no wonder Dismarelda became envious of them.
In other languages
- Italian: Rebecca forester