Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Mroczny Rycerz | 2008 | |
| Writer | Batman - Początek | 2005 | |
| Writer | Mroczny Rycerz powstaje | 2012 | |
| Writer | Joker: Folie à Deux | 2024 | |
| Writer | Kobieta-Kot | 2004 | |
| Writer | Batman | 1989 | |
| Writer | Powrót Batmana | 1992 | |
| Writer | Batman i Robin | 1997 | |
| Writer | Batman Forever | 1995 | |
| Writer | Batman: Zabójczy żart | 2016 | |
| Writer | Batman Ninja | 2018 | |
| Writer | Batman w cieniu Czerwonego Kaptura | 2010 | |
| Writer | The Death of Superman | 2018 | |
| Writer | Syn Batmana | 2014 | |
| Writer | Justice League: Throne of Atlantis | 2015 | |
| Writer | Batman: Year One | 2011 | |
| Writer | Scooby-Doo! i Batman: Odważniaki i straszaki | 2018 | |
| Writer | Batman kontra Dwie Twarze | 2017 | |
| Writer | Batman: The Dark Knight Returns | 2013 | |
| Writer | Nightwing | 1979 | |
| Writer | LEGO: Liga Sprawiedliwości - Legion Zagłady | 2015 | |
| Writer | Batman: Strange Days | 2014 | |
| Actor | Batman & Bill | 2017 | Himself (archive footage) |
| Writer | The Death of Batman | 2003 | |
| Actor | Legends of the Dark Knight: The History of Batman | 2005 | Himself (archive footage) |
| Writer | Justice League - Starcrossed | 2004 | |
| Actor | Riddle Me This: Why is Batman Forever? | 1995 | Himself |
| Writer | DC Super Friends: The Joker's Playhouse | 2010 | |
| Actor | Batman and Me: A Devotion to Destiny, the Bob Kane Story | 2008 | Bob Kane |
| Writer | Batman: New Times | 2005 | |
| Writer | Holy Batmania | 1989 | |
| Writer | James Batman | 1966 |