watch 01:38 The Loop (TV) Do you like this video? Arnie is an employee at the N.S.A. and a friend of William Dey. Contents[show] Biography This section is a stub. You can help expand this section by adding some information. Appearances Supergirl Season 5 "Alex in Wonderland" (text message) Retrieved from "https://arrow.fandom.com/wiki/Arnie?oldid=656939" Categories: Characters Characters from Earth-Prime No species parameter Article stubs Community content is available under CC-BY-SA unless otherwise noted.