Andrew Barrer is a screenwriter and producer who works alongside Gabriel Ferrari as one half of a two-person duo. Before being hired to do script revisions on Marvel Studios' Ant-Man (2015) and then writing its sequel Ant-Man and the Wasp, the two authors wrote Die in a Gunfight (2021) and No Exit (2022).

Barrer and Ferrari pitched Transformers One, an animated prequel movie set on Cybertron, after they were hired as part of the writers' room established during The Last Knight's development. The two were hired as its authors after the pitch was approved.