Prototypes

Unreleased

LEGO Monsters was an idea for a LEGO theme that later became Mixels (theme). Like Mixels it would have consisted of different brick-built creatures.



Sets


Little is known about the actual Monster sets besides their similarity to Mixels. Sets appear to have been slightly larger than Mixels. Several of these sets look similar to the Mixels that would be released in their place.

A possible reference to Monsters is in the book LEGO Mixels: Mixels Vs Nixels! when it says "The Mixels are high-energy, monster-like creatures, who can combine with one another to form new warriors."