Popsugar Celebrity Celebrity Instagrams Matthew Gray Gubler's Most Epic Halloween Instagrams Matthew Gray Gubler, Halloween's Biggest Fan, Has an Abundance of On-Theme Instagrams 13 September 2019 by Hedy Phillips View On One Page Photo 1 of 20 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by official matthew gray gubler (@gublergram) on Oct 31, 2018 at 7:35pm PDT Share This Link Copy ← Use Arrow Keys → 1 Previous Next Start Slideshow Celebrity InstagramsMatthew Gray GublerHalloween