NaN/100 votes#1 - Brain Attack
Season 4 Episode 1 - Aired 3/31/2013
An evil force unleashes alien brains on Makuhero City; the alien brains have the power to turn nice guys into bad guys.
Director: N/A
Writer: N/A
The Best Episodes of LEGO Hero Factory Season 4
Every episode of LEGO Hero Factory Season 4 ranked from best to worst. Discover the Best Episodes of LEGO Hero Factory Season 4!
Based on the LEGO Hero Factory toys, the show focuses on building heroes to protect the world from evil.
Genre:Animation
Network:Nickelodeon