Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Producer | Batman: The Killing Joke | 2016 | |
| Producer | Justice League: The Flashpoint Paradox | 2013 | |
| Actor | Batman: The Dark Knight Returns, Part 2 | 2013 | Hydrant Fireman (voice) |
| Actor | Batman: Under the Red Hood | 2010 | The Riddler (voice) |
| Actor | Batman: The Dark Knight Returns, Part 1 | 2012 | |
| Producer | Batman: The Dark Knight Returns, Part 1 | 2012 | |
| Director | Batman - La maschera del fantasma | 1993 | |
| Actor | Justice League: Doom | 2012 | |
| Producer | Justice League: Doom | 2012 | |
| Actor | Batman e Harley Quinn | 2017 | |
| Writer | Batman e Harley Quinn | 2017 | |
| Producer | Batman e Harley Quinn | 2017 | |
| Writer | Batman e Harley Quinn | 2017 | |
| Producer | Justice League vs. the Fatal Five | 2019 | |
| Actor | Batman contro Jack lo squartatore | 2018 | |
| Producer | Batman contro Jack lo squartatore | 2018 | |
| Actor | Justice League: La crisi dei due mondi | 2010 | |
| Producer | Justice League: La crisi dei due mondi | 2010 | |
| Producer | Superman/Shazam!: The Return of Black Adam | 2010 | |
| Writer | Batman of the Future: Il ritorno del Joker | 2000 | |
| Producer | Justice League: The New Frontier | 2008 | |
| Actor | Batman: Year One | 2011 | Thug #1 (voice) |
| Actor | Superman/Batman: Nemici pubblici | 2009 | Mongul (voice) |
| Producer | Justice League: Gods and Monsters | 2015 | |
| Director | Superman: Doomsday - Il giorno del giudizio | 2007 | |
| Writer | Superman: Doomsday - Il giorno del giudizio | 2007 | |
| Producer | DC Showcase: Catwoman | 2011 | |
| Actor | Lanterna Verde - I cavalieri di smeraldo | 2011 | Galius Zed |
| Actor | Superman vs. The Elite | 2012 | MI-5 Agent (voice) |
| Actor | Lanterna Verde: Prima missione | 2009 | Bug Boy (voice) |
| Actor | Batman Beyond: The Movie | 1999 | Jokerz Leader (voice) |
| Writer | Batman vs. Two-Face | 2017 | |
| Producer | Batman e Superman - I due supereroi | 1998 | |
| Producer | DC Showcase: Green Arrow | 2010 | |
| Producer | Batman: The Dark Knight Returns | 2013 | |
| Producer | DC Showcase: The Spectre | 2010 | |
| Producer | DC Showcase: Jonah Hex | 2010 | |
| Director | DC Showcase: The Phantom Stranger | 2020 | |
| Director | Batman: Strange Days | 2014 | |
| Writer | Batman: Strange Days | 2014 | |
| Writer | Batman: Strange Days | 2014 | |
| Producer | Batman: Strange Days | 2014 | |
| Director | Batman Beyond - Darwyn Cooke's Batman 75th Anniversary Short | 2014 | |
| Producer | Batman Beyond - Darwyn Cooke's Batman 75th Anniversary Short | 2014 | |
| Producer | Justice League - Starcrossed | 2004 | |
| Actor | Superman vs. Batman: When Heroes Collide | 2013 | Himself |
| Director | The Dark Knight's First Night | 1991 | |
| Writer | The Dark Knight's First Night | 1991 | |
| Producer | Superman 75th Anniversary | 2013 | |
| Director | Superman 75th Anniversary | 2013 | |
| Producer | Superman - L'ultimo figlio di Krypton | 1996 | |
| Actor | Heart of Batman | 2018 | Bruce Timm |
| Producer | Batman Beyond: Tech Wars / Disappearing Inque | 1999 | |
| Actor | A First Look at Batman: Under the Red Hood | 2010 | Bruce Timm |
| Actor | Batman: The Legacy Continues | 2004 | Bruce Timm |
| Actor | First Flight: The Fleischer Superman Series | 2006 | Bruce Timm |
| Actor | Batmania Born! Building the World of Batman | 2014 | Bruce Timm |