I think that plot we got on the Goosebumps: Haunted Halloween page may be legit, because on instagram, the cast have revealed a few character names.
Madison Iseman's character is named Sarah Quinn
Jeremy Ray Taylor plays her younger brother, Sonny Quinn
Caleel Harris plays Sonny's best friend Sam Carter
And Wendi McLendon-Covey plays Sarah and Sonny's mother, Kathy Quinn.
Alright, we got four names so far, soon it will be time to make articles for them.