LEGO Hero Factory - Season 1 - Eps 2: Core Crisis
Three Heroes are caught up in a futile fight against the acid-spewing Corroder, and their only hope is to form a shield, using their energy reserves. But their Hero Cores are nearing depletion, so William Furno decides to jump into action and save his friends.
About LEGO Hero Factory

Title: LEGO Hero Factory
First Air Date: 2010-09-20
Last Air Date: 2014-01-09
Status: Ended
Rating: 7.5/10 (from 13 votes)
Language: EN
Seasons: 6
Total Episodes: 11
Network: Nickelodeon
Genres: Animation
Production Companies: Unknown
Synopsis
Based on the LEGO Hero Factory toys, the show focuses on building heroes to protect the world from evil.