In addition to great live-action performances, there have also been plenty of great vocal performances in superhero cartoons. Actors are allowed to be on the senarai lebih than once if they had multiple performances that I enjoyed. Since I'm such a big Batman fan, there will be plenty of performances from Batman Kartun in my list.
From Batman cartoons:
Olan Soule as Batman (The Adventures of Batman)
Ted Knight as Joker, penguin and Riddler (The Adventures of Batman)
Adam West as Batman (The New Adventures of Batman)
Lennie Weinrib as Joker, penguin and Professor Bubbles (The New Adventures of Batman)
Kevin Conroy as Batman (Batman: The Animated Series)
Henry Pollic the 2nd as Scarecrow (Batman: The Animated Series)
Roddy McDowall as Mad Hatter (Batman: The Animated Series)
David Warner as Ra's al Ghul (Batman: The Animated Series)
Rino Romano as Batman (The Batman)
Kevin Michael Richardson as Joker (The Batman)
Tom Kenny as penguin (The Batman)
Adam West as Mayor Grange (The Batman)
Frank Gorshin as Hugo Strange (The Batman)
Tim Conway as Weeper (Batman: The Brave and the Bold)
From Teen Titans:
Tara Strong as Raven
Ron Perlman as Slade
John DiMaggio as Brother Blood
Kevin Michael Richardson as Trigon
Robert Morse as Santa Claus
From Spider-Man:
Paul Soles as Spider-Man (original Spider-Man cartoon series)
Paul Kligman as J. Jonah Jameson (original Spider-Man cartoon series)
Ed Asner as J. Jonah Jameson (Spider-Man: The Animated Series)
Tony jay as Baron Mordo (Spider-Man: The Animated Series)
Neil Patrick Harris as Spider-Man (Spider-Man: The New Animated Series)
From other superhero cartoons:
Don Adams as Inspector Gadget (Inspector Gadget)
Frank Welker as Doctor Claw (Inspector Gadget)
C. Martin Croker as Zorak (Space Ghost Coast to Coast)
Don Kennedy as Tansit (Space Ghost Coast to Coast)
Tara Strong as Ben (Ben 10)
Steve Blum as Wolverine (Wolverine and the X-Men)
John Dimaggio as Zombozo (Ben 10 reboot)
From Batman cartoons:
Olan Soule as Batman (The Adventures of Batman)
Ted Knight as Joker, penguin and Riddler (The Adventures of Batman)
Adam West as Batman (The New Adventures of Batman)
Lennie Weinrib as Joker, penguin and Professor Bubbles (The New Adventures of Batman)
Kevin Conroy as Batman (Batman: The Animated Series)
Henry Pollic the 2nd as Scarecrow (Batman: The Animated Series)
Roddy McDowall as Mad Hatter (Batman: The Animated Series)
David Warner as Ra's al Ghul (Batman: The Animated Series)
Rino Romano as Batman (The Batman)
Kevin Michael Richardson as Joker (The Batman)
Tom Kenny as penguin (The Batman)
Adam West as Mayor Grange (The Batman)
Frank Gorshin as Hugo Strange (The Batman)
Tim Conway as Weeper (Batman: The Brave and the Bold)
From Teen Titans:
Tara Strong as Raven
Ron Perlman as Slade
John DiMaggio as Brother Blood
Kevin Michael Richardson as Trigon
Robert Morse as Santa Claus
From Spider-Man:
Paul Soles as Spider-Man (original Spider-Man cartoon series)
Paul Kligman as J. Jonah Jameson (original Spider-Man cartoon series)
Ed Asner as J. Jonah Jameson (Spider-Man: The Animated Series)
Tony jay as Baron Mordo (Spider-Man: The Animated Series)
Neil Patrick Harris as Spider-Man (Spider-Man: The New Animated Series)
From other superhero cartoons:
Don Adams as Inspector Gadget (Inspector Gadget)
Frank Welker as Doctor Claw (Inspector Gadget)
C. Martin Croker as Zorak (Space Ghost Coast to Coast)
Don Kennedy as Tansit (Space Ghost Coast to Coast)
Tara Strong as Ben (Ben 10)
Steve Blum as Wolverine (Wolverine and the X-Men)
John Dimaggio as Zombozo (Ben 10 reboot)