Antonin was a Vigo for the Black Sun Crime family.
Antonin was created by Ron Marz and Tom Fowler for their Star Wars: Jango Fett graphic novel.
Major Story Arc
Star Wars: Jango Fett
Jango Fett is hired by Dreddon the Hutt to sneaks into Antonin's palace and kill the rival Vigo. Jango finds Antonin drinking his last bottle of Alderaanian Wine. The two have a brief chat and Jango kills him. Unknown to Jango, Antonin has hired Zam Wesell to kill Dreddon, which she does while Jango kills Antonin. Needless to say neither bounty hunter gets their full payment.