Definition: Wyvern is a fictional character from the video game series "Mass Effect." The Wyvern is an intelligent and powerful creature with the ability to fly, which is essential for its hunting and survival in the harsh space environment of the game. The Wyvern has been portrayed as a fearsome creature that is both aggressive and cunning. It is often depicted as having a massive body and large wingspan, which it uses to soar over hostile planets or to hunt down prey on the surface of their home world