Wyvern (Dungeons & Dragons) aggressive, and able to lash with a sting-equipped tail. This edition of the "D&D" game included its own version of the wyvern, in the "Dungeons & Dragons Expert Set" (1981 & 1983). The wyvern was also later featured in the "Dungeons & Dragons Game" set (1991), the "Dungeons & Dragons Rules Cyclopedia" (1991), and the "Classic Dungeons & Dragons Game" set (1994). The wyvern appears first in the "Monstrous Compendium" Volume One (1989), and are reprinted in the "Monstrous Manual" (1993). The Mercykiller wyrm, a relative of the wyvern for the Planescape campaign setting, appeared in "In the Cage: A
Wyvern the coat of arms of the Tilley family. The kings of Aragon of the House of Barcelona since Peter IV used a wyvern as a crest on their helmets. Nowadays this symbol has been officially adopted as the coat of arms of the Generalitat Valenciana (Valencian Parliament and Government). The arms of the Worshipful Society of Apothecaries depict a wyvern, symbolising disease, being overcome by Apollo, symbolising medicine. The wyvern is also a fairly popular commercial logo or mascot, especially in Wales and what was once the West Country Kingdom of Wessex, but also farther afield in Herefordshire and Worcestershire,