Kamen Rider Specter × Blades ended with Post Credits revealing the face of the mysterious man who had appeared in both 'Saber × Ghost' and also in this spin-off. Details on the character have not yet been revealed. But he is played by Pro-Wrestler Hiromu Takahashi a.k.a. TIME BOMB.
Fans suspect that this post-credit would be another sequel to Saber-Ghost Spin-Off Series and it could be between Kamen Rider Espada and Kamen Rider Necrom next.