Tokusou Sentai Dekaranger S01 E02 Robo Impact

Three unidentified objects have landed in Japan. Upon investigation, they escape. An object is found near the crime scene, which had an audio recording on it, with a plan to take over Earth. Luckily, the Dekarangers are on the case, fighting their first Alienizer, Moyeda. But, Ban isn't accepted by the others are a leader nor member. Will they ever? Also, what's Ban's will to fight? Does he have any?