watch 01:56 The Loop (TV) Do you like this video? Play Sound "We test, we prove, we report. That's what we do." —Barry Allen[src] This article is in need of citations. You can help by contributing.Please be sure to cite in accordance to our Manual of Style. "It's time to think big!" —Clyde Mardon[src] This article is a stub. You can help expand the article by adding some information.Please be sure to edit in accordance to our Manual of Style. Gruber is a weapons dealer working with Johnny Ray Hix. Contents 1 Biography 2 Abilities 3 Appearances 3.1 The Flash Biography This section is a stub. You can help expand this section by adding some information. Abilities This section is a stub. You can help expand this section by adding some information. Appearances The Flash "Sins of the Father" Retrieved from "https://arrow.fandom.com/wiki/Gruber?oldid=559316" Categories: Humans Citations needed Article stubs Characters Characters from Earth-90 Villains Community content is available under CC-BY-SA unless otherwise noted.