
A dead "half epic" creature.
Half-Epics are very rare creatures that spawn if the player wanders inland during the very early Creature Stage. As the internal name "Epic carcass" suggests, there is no such thing as a living Half-Epic in the vanilla game.
Their Sporepedia cards state that they have a full health limit of 500, as opposed to a regular Epic's health of 1,000. If revived by modifying the file that controls their attributes, they will have only 400 health. Although they attack NPC creatures, they will not attack the player unless provoked, nor are they willing to socialize.