The Keencyclopedia
The Fleex are amongst the finest engineers in the universe, having designed all the buildings and devices on Fribbulus Xax. Unfortunately, the Bloogs built them, devastating the sleek and elegant designs. The Fleex have very sensitive eyes (a natural consequence of spending a lifetime in a basement lab), so sensitive that they have to wear dark shades when they're out in the light (making them nearly blind). To compensate, they've developed an oversized ear which allows them to hear other creatures as they move around.
Found in: Keen 6, Keen GBC

Keen 6

Keen GBC