Based on available information, 'It Takes a Thief' does not feature any identifiable LGBTQ+ characters or themes. The series, a spy-adventure from the late 1960s, predates significant mainstream LGBTQ+ representation in television. Therefore, there is no portrayal to evaluate.

The 1968 television series 'It Takes a Thief' is a spy/adventure show centered on a master thief working for the U.S. government. There is no evidence of transsexual characters or themes being present in its narrative, aligning with the typical content and focus of its genre and time period.

The show, a spy-adventure series from the late 1960s, primarily focuses on the male protagonist's espionage and thieving skills. While female characters appear as allies, adversaries, or love interests, there are no notable instances where they are depicted as physically defeating one or more male opponents in close-quarters combat.

As an original television series from 1968, "It Takes a Thief" introduced its own characters without prior canonical or historical gender baselines to deviate from. Therefore, no gender swaps occurred.

As an original television series from 1968, "It Takes a Thief" did not adapt characters from prior source material, historical records, or earlier installments. Therefore, no characters existed with a pre-established race to be altered.