User blog comment:Matt Hadick/Fan Facts: You Don't Know Handsome Jack/@comment-11848168-20150504191416

Jack's father left at an early age, and his mother gave Jack up to his grandmother.

Jack's favorite color is obviously yellow, which is known to be the color of cowards.

Jack describes wearing his mask like putting on a ones-ey after getting it out of the drier. (From a Q&A)

His favorite actor is Tom Cruise. (Same Q&A)

He hates playing favorites, so he hates all the vault hunters equally. (Q&A)

As a source, here's the video https://www.youtube.com/watch?v=H1o-rd0aZIs