They started as doctors (see the blue markings on their legs) and voyaged in many dangerous worlds. That was until there was the battle of Christophispher. The blue squadron leader was on a deadly and dangerous mission, but two of his team mates died.These two died because of an exterminator thought of them powerful and destroyed them. When he walked across the battle field, the twins were sabotaging a load of exterminators. Twin 1 was hitting one of the exterminators in the face with his gun and twin 2 was pulling out wires from the chest of the exterminator. Z admired this and made them part of blue squadron, not only because he wanted to, but because he had to. For 1, he had lost 2 of his team mates and this was a chance to replace them. And 2, he was supposed to recruit anyone who had destroyed at least 1 exterminator. He knew these two were the right one, thus he recruited him.
