Killer Mike 's blood type is A positive for all things Atlanta, and he's all set to induct Outkast into the Rock Hall of Fame ... but he also wants to see one of his beloved Braves get their just due!!! Gallery Launch Gallery Getty

TMZ Hip Hop caught up with Mike at LAX on Wednesday afternoon, beaming with pride about giving André 3000 and Big Boi their "roses" while they can still smell them.

Outkast actually gave Mike his start back in 2000, debuting him via DJ Clue 's "Backstage" compilation, as well as on their classic "Stankonia" album ... onward to releasing his own solo debut, "Monster," through their Aquemini record label in 2003.

They also won a Grammy together in 2003 for the track "The Whole World" ... Outkast and music industry vet Regina Davenpor

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