Jude Heartfilia is Lucy's father in the Fairy Tail franchise.
When Layla passed away, Jude became a bad father who neglects Lucy such as forgetting her birthdays. He has been preoccupied with running his business and wants Lucy to focus on her studies.
Jude is created by Hiro Mashima, and he has no information regarding any inspiration used to create him. He first appears in chapter 68 of Fairy Tail volume 9 and episode 29.