While in Sydney, he became a bodyguard for Jamaican singer Grace Jones and began a relationship with her.
He received a Fulbright scholarship to MIT and moved to Boston.
A graduate of the American Academy of Dramatic Arts, he was discovered in New York by a Universal Studios talent agent while performing the lead in the play Philadelphia, Here I Come.
After signing with Universal and moving to California, he slowly built up his resume with work on such dramatic series as Adam-12 (1968), Marcus Welby, M. (1969), Mc Cloud (1970) and Alias Smith and Jones (1971).
At just 6 years old, a musical genius was in the making.
Sundance, an older friend of Mick's from the neighborhood, gave him lessons.
The first song he would learn to play on Sundance's guitar was "My Dog Has Fleas".
A few years later, after the birth of Mick's sister, Susan, The Deal family moved to Garden Grove California.
Mantooth claims in the suit, filed in a Los Angeles court, that she and Mars became involved in 1990, shortly after they met, and that she quit her job as a documentary filmmaker to live in Mars' Malibu, California, home with him.
She claims that when the couple broke up this past December, Mars would not acknowledge their oral agreement and has refused to give her financial support.
In the palimony suit — in which a member of an unmarried couple asks for monetary compensation following a separation — Mantooth is reportedly seeking half of Mars' property as well as monthly support and damages.
It began one Christmas morning when Mick was 6 years old. It had Mickey Mouse ears on the top and a crank that played Mousketeer songs when he turned it.
Mick was by no means into "mousketeer material" so he tightened the guitar strings until it made a sound that was music to his ears.
The second of five children, Robert was born in Huntington, Indiana where he would spend the earlier part of his childhood years.