Possess white color or some random colors than other variants dominance, most of them are the starter or more balanced variants of the others.
Possess red color dominance, most of the units has slightly varied stats compared to their more balanced type if any exist.
These enemies possess varying stats, but they typically have quick movement speed and short - moderate range. Most Floating enemies also have another trait.
Possess black or dark color dominance, most of the units has significant varied stats compared to their more balanced type if any exist.
Introduced mid-late in the game, usually indicated by the halo rings or angel wings. These are powerful variants usually.
Introduced mid-late in the game, usually indicated by their altered body part and pale color compared to other variants. Usually a more powerful variants than their standard.
These units possess some to very strong damage reduction except to critical hits. Usually comes in grayish color and metal themed body parts.
Dominant with purple color, usually these units possess special resurrection ability or other unique actions. Anti-zombie units deal more damage or take less damage from them. Zombie Killer ability will stop them from resurrecting.
Units which has special type or category are here. These enemies are not common and usually can only found in certain stages.