List of Monsters in Star Teens Unite!

This is a list of monsters created by Dr. Ivor Einstein as well as Queen Vampira.

Monsters created by Dr. Ivor Einstein

 * Frogmen - Einstein's created group of mutated man-size bipedal frogs with sharp teeth and claws that try to eliminate the Star Teens.
 * Giant Mutated Leeches - His created group of monstrous leeches that suck blood out of their human victims.

Monsters created by Queen Vampira

 * The Green Glob - Vampira's gelatinous killer glob that tries to engulf the Star Teens.
 * Vampire Formula - Not a monster, but Vampira's substance that everyone she sprays turns into blood-sucking vampires that make others become them. However, sometimes the vampire formula's effects do not last.
 * Spider Centaurs - Her group of human-tarantula hybrids that try to attack the Star Teens.