Grumpy Old Geeks People Keith Giffen Person Keith Giffen 2 mentions in 1 episode A comics artist and writer remembered near the end of the episode. Mentions 621: Cryptomucil Oct 14, 2023 1:18:12 An RIP to Keith Giffen, legendary comics artist and writer. 1:18:48 He did create Rocket Raccoon for Marvel, but he also created Lobo.