The former Women of Honor champion is suing Ring of Honor and Sinclair Broadcasting for discrimination among other things.
ROH's announcement stated that EC3 is "making ROH his home."
In the main event of the ROH TV episode that premiered this past weekend, Shane Taylor Promotions defeated MexiSquad to win the ROH Six-Man Tag Team titles.
ROH will return to pay-per-view in March for their 19th anniversary show.
A title match that was originally scheduled for Final Battle will take place on ROH television later this month.
One year after first arriving in the promotion, Slex has signed a new contract with Ring of Honor.
King joins his La Faccion Ingobernable stablemates in signing new deals with the company.
The match will air on the ROH TV episode that premieres the weekend of February 27.
ROH World Champion Rush and ROH Television Champion Dragon Lee have both re-signed with Ring of Honor.
Formerly ROH World Champion and current ROH Tag Team Champion Jay Lethal has signed a new contract to remain with the company.