Hero Factory

Preston Stormer

Professor Nathaniel Zib

Mark Surge

Julius Nex

William Furno

Jimi Stringer

Natalie Breez

Dunkan Bulk

Corroder

Black Phantom

Akiyama Makuro

Preston Stormer's former team leader, Tresher, who we see in flashbacks, uses the same animation model as Dunkan Bulk, with his armor colored olive green.

The name of Makuhero City comes from a play on the expression "make you a hero". This is fitting, considering the city's primary facility is the Hero Factory. It also references its founder, Akiyama Makuro.

Although the earlier episodes had a basic continuous story, later episodes threw out the continuity almost entirely, and instead told stand-alone stories, all of which ended in unresolved cliffhangers. The final episode in particular utilized a different design style and replaced all of the voice actors. Some believe this was because LEGO had already decided to cancel the series eventually as early as 2012, and most of their attention was diverted to preparing the relaunch of their more popular BIONICLE toy-line.

A recurring continuity error throughout the series is how suddenly the Heroes' armor gets damaged. Literally, in one shot, they are completely shiny and clean, but when the action starts, scrape and dirt marks appear all over them -- not only on the larger, more exposed surfaces, but also on the smaller and well hidden pieces, like the hinges on their fingers. Sometimes even those Heroes get damaged who haven't done anything yet, just stood there.