Metal Dragon + Morphing Jar → Stone D.

Metal Dragon + Giant Turtle Who Feeds on Flames → Sea King Dragon

Metal Dragon + Rose Spectre of Dunn → B. Dragon Jungle King

Metal Dragon + Fiend Refrection #1 → Crimson Sunbird

Metal Dragon + Ghoul with an Appetite → Curse of Dragon

Metal Dragon + Pale Beast → Flame Cerebrus

Metal Dragon + Little Chimera → Flame Cerebrus

Metal Dragon + Obese Marmot of Nefariousness → Flame Cerebrus

Metal Dragon + Electric Lizard → Twin-headed Thunder Dragon

Metal Dragon + Snakeyashi → B. Dragon Jungle King

Metal Dragon + Succubus Knight → Vermillion Sparrow

Metal Dragon + The Thing That Hides in the Mud → Stone D.