You need two of these players on the field: Jude, Samford or Erik. To unlock Emperor Penguin No.2 for every Jude, just scout his Royal Academy version. Then every Jude will be able to use it, if there are two of these players on the field: Axel, Kevin, Erik, Samford, Hatch, Nathan, Froste or Stonewall. Hatch, Swing and Samford of Royal Academy know this shot since the beginning. After you unlock this shot Erik can use it if there are two of these players on the field: Mark, Bobby or Night. After you unlock it, this shot can be used with/from Willow (Girls' Team) too. After you unlock it, this shot can be used with/from Celia (Girls' Team) too. You don't need to unlock this shot: Janus, Diam and Rihm know it since the beginning. You can use it if two of these players are on the field. You don't need to unlock this shot: Mercury, Metron, Zell, Janus and Heat know it since the beginning. You can use it if three of these players are on the field. After you unlock it, this shot can be used with/from Nelly (Girls' Team) too. You can use other managers as partners, if you like. After you unlock this shot, Miles can use it too. After you unlock this shot, Stonewall can use it too. After you unlock this shot, Axel can use it without Canon, as a normal lv.3 shot.