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- May 1st: Gorz the Emissary of Darkness
- May 2nd: Divine Wrath
- May 3rd: The Agent of Judgment - Saturn
- May 4th: Green Baboon, Defender of the Forest
- May 5th: Drillroid
- May 6th: Vennominaga the Deity of Poisonous Snakes
- May 7th: Electro-Whip
- May 8th: Thestalos the Firestorm Monarch
- May 9th: UFO Turtle
- May 10th: Volcanic Shell
- May 11th: Volcanic Scattershot
- May 12th: Volcanic Slicer
- May 13th: Volcanic Hammerer
- May 14th: Volcanic Doomfire
- May 15th: Blaze Accelerator
- May 16th: Tri-Blaze Accelerator
- May 17th: Kaiser Sea Horse
- May 18th: Sea Serpent Warrior of Darkness
- May 19th: Luster Dragon
- May 20th: Gene-Warped Warwolf
- May 21st: My Body as a Shield
- May 22nd: Sillva, Warlord of Dark World
- May 23rd: Destiny Hero - Dasher
- May 24th: The Inexperienced Spy
- May 25th: Silent Swordsman LV3
- May 26th: Silent Swordsman LV5
- May 27th: Silent Swordsman LV7
- May 28th: Gravity Bind
- May 29th: Deck Devastation Virus
- May 30th: Sakuretsu Armor
- May 31st: Chaos End