Pixies are humanoid monsters that are easily obtainable from the beginning of each game (They appear in every Monster Rancher game to date). Pixies are red faeries with horns, leathery wings, and a long, whip-like tail. Their would-be evil appearance is offset by the bright colors and heart-like imagery that their combinations usually bring. Pixies are known to be disobedient but can be powerful allies in battle.
Pixies use a variety of fire and electrical attacks combined with speed to sap the opponent's will to fight. In the anime series, it is shown that they are human-sized, as opposed to the size of fireflies or birds like in the legends.
Pixies are slightly modified in appearance throughout the series, but receive their biggest makeover in the two Online games, where they go from being covered in fur to wearing a red-orange bodysuit complete with thigh-high boots and long gloves. They come in all sorts of color variations and hairstyles/horn arrangements that are determined by diet. There is also an option in Monster Farm Lagoon to unlock the original-looking Pixie, called Alto Pixie (アルトピクシー Aruto Pikushī?).