Crossing Over - One Series to Another Quiz

The shared universe of "Star Trek" allows for the stars of one series to appear as their well known characters in other series as well. The first such appearance came when appeared in the first episode of "Star Trek: The Next Generation". He was subsequently followed first by , and then .

Three series were set in the 24th century, providing more scope for crossovers, with the first to do so. Before "Star Trek: The Next Generation" came to an end, and (who was the first person to appear in all 24th century series) also made crossover appearances.

During the period that "Star Trek: Deep Space Nine" and "Star Trek: Voyager" were being broadcast in parallel, both (who also appeared in all three shows) and made crossover appearances, but not strictly as their own characters. Similarly, made a crossover appearance both as his own regular character and the other that he also played - this was the year after he also appeared in "Star Trek: First Contact".

Although one actor from "Star Trek: Deep Space Nine" appeared in the first episode of "Star Trek: Voyager", the highest number of crossover appearances from a regular cast member came when from "Star Trek: The Next Generation appeared three times in "Star Trek: Voyager". A further appearance came when appeared in and directed the 100th episode of "Star Trek: Voyager".