Grumpy Old Geeks People Alex Hirsch Person Alex Hirsch 2 mentions in 1 episode The Gravity Falls creator whose archival art is discussed as part of the upcoming book. Mentions 738: A Sprinkling of Random Mar 20, 2026 56:43 Series creator Alex Hirsch, returning alongside co-writer Rob Renzetti. 57:46 It's curious that Alex Hirsch hasn't really done much since then.