Mareep is a Pokémon with fluffy cream wool covering its entire body, as well as a curly tuft of wool in the middle of its head. Its head is blue, and it has black eyes with white pupils. Its four feet are blue and have two digits on each foot, and it appears to be on tiptoe at all times. Its horns, presumed to be its ears, and tail have a yellow and black striped pattern. Mareep has an orange sphere at the end of its tail, which acts like a small light bulb.
Mareep's wool stores electricity, rubbing together and building a static charge, and increases in volume when it builds up with electricity. Touching the wool when the wool is charged will result in a nasty static shock. The bulb at the end of Mareep's tail glows brighter the more electricity it has.
Mareep tend to avoid battle in the wild and have mild dispositions. Mareep's fleece grows continually. In the summer, the fleece is fully shed, but it grows back in a week. Mareep also stores air in its soft fur, allowing it to stay cool in summer and warm in winter.
Mareep are most often found in grassy fields. Mareep are also kept on farms where their wool is used in high-quality clothing.
This Pokémon was unavailable prior to Generation I.