In the anime
Rebecca Forester made her debut in EP004 with Katie who wanted a best vote in a test.
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.
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 his 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