Tank and Monster the Second Generation Corps, Full Force of Eight Riders (戦車と怪人Ⅱ世部隊 ８人ライダー勢ぞろい Sensha to Kaijin Nisei Butai Hachi'nin Raidā Seizoroi) is the twenty-seventh episode of Kamen Rider (Skyrider). It is the first part of a two-part arc which sees all seven of the original Kamen Riders returning to Japan to help Skyrider fight Neo-Shocker, the second time all eight Riders fight together following the movie Eight Riders vs. Galaxy King. Thus, it features the first appearances of Riders #1, #2, and Amazon in the TV series.