My Life as a Teenage Robot - Sister Sledgehammer

Seizoen: 2 - Aflevering: 8 / 36 - Eerst uitgezonden: 23 juni 2005 - Episode ID: 521559

Commander Smytus has actually succeeded in assimilating Jenny into the Cluster, and has turned her into a massive metal monster. Having been awakened due to Jenny being in crisis, the rest of the XJ line have come to save their captive sister.