Quick answer — Masashi Koizuka worked on Attack on Titan Season 3 Part 2 (Director), Attack on Titan Season 3 (Director), Attack on Titan Season 2 (Director) and 7 more anime.
Masashi Koizuka worked on Attack on Titan Season 3 Part 2 (Director), Attack on Titan Season 3 (Director), Attack on Titan Season 2 (Director), Attack on Titan: No Regrets (Assistant Director), Attack on Titan: The Roar of Awakening (Director), Attack on Titan: Lost Girls (Director), Attack on Titan OVA (Assistant Director), Seraph of the End: Vampire Reign (Assistant Director) and 2 more.
