April Dancer is the main character in the TV series "The Girl from U.N.C.L.E.", played by Stefanie Powers. She is a highly skilled and intelligent agent for the United Network Command for Law and Enforcement (U.N.C.L.E.), a fictional international intelligence agency created to combat the activities of the evil organization T.H.R.U.S.H.

April is depicted as a strong, independent and capable woman, who is able to hold her own in dangerous situations. She is often portrayed as resourceful and quick-thinking, using her skills in martial arts, disguise and espionage to successfully complete her missions. Her partner is Mark Slate, played by Noel Harrison, and the two share a close, but platonic relationship.

April's backstory is not fully explored in the series, but it is revealed that she is a graduate of the Sorbonne, and is fluent in multiple languages, including French, Italian, and Spanish. She also has a sharp wit and a playful personality, making her a popular and likable character among viewers.

Overall, April Dancer is remembered as an important trailblazer for women in action roles on television, and Stefanie Powers' portrayal of the character helped to break down gender stereotypes in the spy genre.