Monsturtle + Rock Ogre Grotto #2 → Boulder Tortoise

Monsturtle + Sectarian of Secrets → 30,000-Year White Turtle

Monsturtle + Mavelus → Turtle Bird

Monsturtle + Ground Attacker Bugroth → Amphibious Bugroth

Monsturtle + Mystical Sheep #2 → Turtle Tiger

Monsturtle + Tao the Chanter → 30,000-Year White Turtle

Monsturtle + Fireyarou → Giant Turtle Who Feeds on Flames

Monsturtle + Psychic Kappa → Hyosube

Monsturtle + One-eyed Shield Dragon → Spike Seadra

Monsturtle + Wicked Dragon with the Ersatz Head → Spike Seadra

Monsturtle + Kurama → Turtle Bird

Monsturtle + Final Flame → Steel Shell