Fredrick "F", seen only in Scythe 2:0, is, according to Grim, the man responsible for all the "top-secret reaping gadgets". He makes the best reaping tools and gadgets in the underworld, and he is the one who made Grim's scythe. Fredrick is an old and bald scientist who always wears a white lab coat. He built Scythe 2.0. and Doom Buggy. He is mildly based on Q from James Bond.
He is voiced by Ian Abercrombie.