Malcolm Merlynn: He was father of Sarah Queen and he is arch-enemy to Gaim, he decide to become Dark Archer and he stop Gaim/Green Arrow. He work with Bujin Gaim to kill Gaim for their plan.

Deathstoke/Slade Wilson: He was the one who train Dan Queen how to survive, his daughter fell in love with Dan but she was dead and he blame on Dan for left her to die. He become Deathstroke and kill Gaim. 

Ra Al Ghul: He was leader of League Of Assassin and he is enemy to Gaim, he have two daughter and he was former mentor to Dan,  the former best friend-turned nemesis of Damien Darkhk. 

Damien Darkhk: He was former old friend of Ra Al Ghul, he have his daughter who become enemy to him known as White Canary. He stole water from Lazarus Bit and he make new organization called H.I.V.E

Cupid/Kamen Rider Idunn: She was enemy to Dan Queen and she fell in love with Gaim but she see Gaim have feeling for Kiana. She become Yandere toward at Gaim and threat Kiana to kill her for Dan.

Bujin Gaim/Dan Queen: Bujjin Gaim aka Dan Queen is from Earth-Bujin where Kamen Rider is Bujin fight each other for Shogun. Dan Queen lost his lover and he become Bujin Gaim to kill Kamen Rider by revive his lover.

Duke/Ryoma Stone: He was former scientist of S.H.F and he experiment on human by turn them into Honkai Beast. He work for Bujin Gaim and he interest Gaim/Green Arrow, he decide to observe Gaim and collect battle data from Gaim. 

Kohgane/Kamen Rider Mars: He was enemy to Kouta Kazuraba after he was defeat by Kouta long ago, he was revive by Dark Decade and send to kill Gaim/Green Arrow. He also kidnap Kiana and turn her into Herrscher Of Void.