Originally posted by Parmaniac
What happened? All I can remember is that all rings were drained secretly without overcoming their will over a long time span.
krona showed up, using ion, and told hal that he had control over emerald energy. hal briefly out-willed him and actually used his ring to attack krona.
to me that suggests that even draining the ring or trying to manipulate it is still somewhat subject to overcoming the lantern too.