Yes Aisha, I couldn't have said it better myself.
Frieza has the most effective one-hit K.O. move in the game, most people argue that he is too powerful.
But I do agree that he needs a descent beam attack, but I can't recall him using one in the show.
I think it is just a generic beam, since Freeza didn't appear to have much energy left for anything bigger.
Freeza seems to be a really big fan of balls instead of beams, but there was one beam that I remember in particular that he used against Piccolo when they were fighting 1 on 1. Freeza raised his hand above his head and produced a red ball about twice the size of the earthlike SP, and proceeded to turn it into a rather large beam.
I dont think that frieza has any good signature beam attacks. You must remember that at the end of his fight with goku, he resorted to using himself in a beam struggle with ssj goku. Most villians would have countered with a beam of their own, but no frieza didnt do anthing of the sort.