Weredragon

From Doom Wiki

Weredragons are monsters from Heretic. These monsters are half-beast, half-dragon. Their appearance can be deceiving; the player should be careful in attacking them. They spit out dangerous fireballs which leave behind a smoke trail and can cause significant damage. They make their first appearance on E2M1, The Crater. When killed, Weredragons sometimes drop Ethereal Arrows worth double the shots as those normally picked up. They possess 220 Hit Points each.

Some source ports refer to the Weredragon as "Beast".

Heretic monsters
D'Sparil | Disciple of D'Sparil | Fire Gargoyle | Gargoyle | Golem | Golem Ghost | Green Chaos Serpent | Iron Lich | Maulotaur | Nitrogolem | Nitrogolem Ghost | Ophidian | Sabreclaw | Undead Warrior | Undead Warrior Ghost | Weredragon