One of the most iconic reoccurring characters on Star Trek has to be the character of Q. Between TNG, DS9 and Voyager he appeared a total of 12 times leaving his mark on the Star Trek universe.
When Disney bought Lucasfilm one of the casualties of the sale was the animated series The Clone Wars that had been airing on the Cartoon Network since the fall of 2008 when it premiered.
Below are some really nice Star Trek posters based on the Episodes themselves. All by different artists.