Yes, there is indeed a helicopter on Mars.

Since I’m an engineer and always need to rub that in your face, I will tell you that a helicopter on Mars has an advantage that gravity is only about 1/3 of Earth gravity, but it has a severe disadvantage that the atmosphere is much thinner. So this helo is special.

But NASA has solved this problem and has a helicopter there now. Watch it fly around, this is way cool.