Numbuh 20/20 is a KND Marksman who appeared in Operation: H.O.T.S.T.U.F.F.. Despite his codename being a pun on "20/20 Vision", he has very poor eyesight, but lives up to his name using special sight-enhancing goggles. He was ordered by Numbuh 362 to fire the H.O.T.S.H.O.T. into the Sanban Residence which was on fire. He was also seen in Operation: T.R.I.C.Y.C.L.E., shooting ketchup on the big bike. He is voiced by Dee Bradley Baker.
Numbuh 2020 wears red and yellow goggles, a green helmet, a green jacket, green gloves, and green shoes. He has yellow shorts and yellow socks and his sleeves are also yellow. With the huge clash of green and yellow, he resembles a bug.
When wearing his goggles, his vision is perfect, hence the name Numbuh 2020 (referring to how perfect vision is 20-20 vision). When he is not wearing his goggles, his eyesight isn't very good and he is seen squinting in an attempt to see better. During his brief appearance in Operation T.R.I.C.Y.C.L.E, he is given an order to attack the tricycle from the Moonbase. His laser sharp eyesight allows him to accurately shoot the vehicle, despite being on another planet. However, it is seen that he just shot ketchup at the tricycle, which proved to be ineffective.