Corruptrons are the enemies of the Bricktrons which start attacking on the first night on Survival Mode. They come in waves to reach the large, blue crystal and seek to destroy it. Any defensive Bricktron that protects the crystal will be attacked. Corruptrons also throw rocks at Bricktron Archers.
AppearanceThey appear to be rock-like humanoids which have rough, spiky rocks protruding from their backs. The larger corruptrons have a stronger build due to their massive damage. Most Corruptrons appear to have an under-bite or a big jaw.