A spin-off featurette focusing on the character of Zack (Kamen Rider Knuckle), released alongside Duke as part of the second double set of Kamen Rider Gaim Gaiden, a series of V-Cinema (direct-to-video) releases that each serve as a spin-off hosted by a supporting Kamen Rider from Kamen Rider Gaim.
It's been one year since Kaito disappeared, and peace had returned to Zawame City once more. Zack departed for New York, and left leadership of Team Baron to Peko. However upon hearing that Shura, a former member of Team Baron that Kaito once exiled, had formed his own team, Neo Baron, Zack returns to Zawame City to set things right.
《幪面超人Knuckle》
澤芽市和平的日子，驅紋戒斗離世後經過一年，失去目標的Zack為了想挑戰自身舞藝，將舞團「Team.巴隆」交託給Peco後決定前往紐約。
身處在紐約的某天收到Peco姊姊薊的電話，獲悉Peco失縱後因而急忙回國。從城乃內秀保打聽到曾被戒斗放逐的修羅，自行成立了以經營地下格鬥場並名為「Neo巴隆」的流氓集團，同時發現Peco竟自願加入作為修羅的旗下成員。
