This allows you to use a special character and that character's weapon below:
①Ranger (EDF5), Sergeant Colors & Special Gear Ver.1.01
②Fencer (EDF5), Grim Reaper Colors & Special Gear Ver.1.01
③Wing Diver (EDF5), Spriggan Colors & Special Gear Ver.1.01
④Ranger (EDF4), Omega Team Colors & Special Gear Ver.1.01
⑤Prowl Rider (EDF: IR), KR Prototype & Special Gear Ver.1.01

More details on the official game page of Collector's Set of Various Character Versions ...