Zackie Beauchamp, referred to as Zack in the television episode, is the main protagonist in the fifty-fifth Goosebumps book, The Blob That Ate Everyone. He is also the best friend of both Alex Iarocci and Adam Levin.
Sorting fictional characters by their first names, not including actors or anything. Since somebody has decided to exactly copy this story just know that this is the original, and some people need to get some creativity