The all new Magnum P.I Funko Pop! Vinyl's are here! Thomas Magnum is here to join your collection! It wasn't anything earth shattering, I woke up aged 33, and realised I'd never been 23. - Thomas MagnumMagnum PI was an American television show that ran for 12 seasons between 1980 and 1989. Thomas Magnum III is the private detector and protagonist of the show. Figure measures about 3 3/4 inches tall and comes packaged in a window display box, please note images shown are artwork and final product produced may vary.