Cactuars are one of the staples of the Final Fantasy series. They are small, Cactus-like characters that are in a permanent running-like state. Though some see this as looking like a backwards swastika, a symbol of hate, it's actually supposed to be a manji, a symbol of universal harmony. Oops.
Their trademark attack, 1000 Needles does 1000 points of damage by firing 1000 needles at the target. It can often be absorbed with Blue Magic