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The following demons are conjured by Diabolico and his forces through Demon Cards. To make a demon grow, Jinxer would cast an incantation upon the monster's body enabling them to grow. Some even have advanced forms when revived with Advance Growth Cards.

List of all Lightspeed Rescue monsters.

• Ghouligan
• Quakemon
• Whirlin
• Fireor
• Gold Beaked Monster
• Elestomp
• Strikning
• Smogger
• Magmavore
• Trifire
• Liztwin
• Demonite
• Thunderon
• Falkar
• Trika
• Cobra Incarnate
• Thunderclaw
• Shockatron
• Spellbinder
• Moleman
• Cyclopter
• Mantevil
• Vilevine
• Freezard
• Infinitor
• Birdbane
• Memorase
• The Gatekeeper
• Furnace Monster
• Ghoular
• Flur de Tooth
• Mermatron
• Fire Wasp
• Aquafiend
• Arachnor
• Treevil