- Dark Wave
- Dark Witch
- Dark Zebra
- Dark-Eyes Illusionist
- Darkfire Dragon
- Darklon
- Darkness Half
- Darksea Float
- Darksea Rescue
- Dash Warrior
- Data Brain
- Daybreaker
- De-Fusion
- De-Spell
- Debris Dragon
- Debris Station
- Debugger X
- Debugger Y
- Debugger Z
- Decago Knight
- Decoy Baby
- Decoyroid
- Decrease
- Dedication through Light and Darkness