After Cortez betrays Magneto .
Cortez is believed to have been killed by the X-Men , the Acolytes pledge their loyalty to Cortez , though they turn on Cortez after Cortez is later exposed .
After Cortez betrays Magneto and he is believed to have been killed by the X-Men , the Acolytes pledge their loyalty to Cortez , though they turn on him after he is later exposed .