Joker vs Dr. Sivana Real Name
Alter Ego
Jack Napier
Thaddeus Bodog Sivana
Alias
Harlequin of Hate, King of Arkham Asylum, Red Hood, Jack Napier & Mr. Face Paint
Thaddeus Bodog Sivana Doctor Sivana Dr. Sivana Sivana The World's Wickedest Scientist
In Films
Cesar romero, Heath ledger, Jack nicholson, Jared leto, Rod navarro
Not Yet Appeared
Love Interest
No Love Interest
Identity
Secret
Public Identity
Alignment
Supervillain
Supervillain