Re A (conjoined twins) indicated that Gracie was the stronger sibling who was sustaining the life of Rosie. Rosie had only survived birth due to a shared common artery that enabled her sister Gracie to oxygenate blood for both twins. If surgically separated, Gracie had a 94% survival rate, but Rosie was guaranteed to die. However, if they were left conjoined, then Gracie's health—which was already rapidly deteriorating—was predicted to fail before they were six months old. Gracie's death would inevitably result in Rosie's. At first instance, Mr Justice Johnson was left to decide the case without any direct precedents to guide him but
Trigger Twins Secret Society of Super Villains. As part of an army, they are sent to destroy the city of Metropolis. Another army of superheroes face them. During what is called "Battle of Metropolis", the twins are shot down in the street by a group of vigilantes that include the current Vigilante and Wild Dog who were perched on a nearby rooftop. This battle takes place in "Infinite Crisis" #7. During the "Blackest Night" crossover, the Trigger Twins are among the many deceased villains that receive a black power ring, reanimating them into Black Lanterns. The Earth 18 version of Trigger Twins