u/Delta-97

Source: Little Cupid Dad is Here
Left: Enxi
Right: Yu Fei

Little Cupid Dad is Here chapter 218

Source: Becoming Necromancer God Through a Skeleton Clone

For me the final poster looks like Ex-Dream is the light to the Gore Nightmare’s chaos while Dawn and Nox are there battling Lord Three along the way.

Left - Isabella [I am not a regressor]
Right Yuita Bloodia [Became the Patron of Villains]

Kamen Rider Zeztz

This is related to the Original Myth and Kamen Rider Rid, as we do not have much information about him in the teaser, obviously, but I think this is what is going to happen. Kamen Rider Myth (Original) might have suffered some event and decided to go rogue and turn into Kamen Rider Rid; hence, this is what we see in the toy catalog.
However, I'm curious what will happen in the show.

For me it’s Kamen Rider Myth gives the initial vibes of Ryuki and Geats. Using the zodiac myth into this looks insane.

Kamen Rider Super -1 : 10th Anniversary
Kamen Rider Black: 15th Anniversary
Kamen Rider Shin and Kamen Rider ZO: 20th Anniversary Kamen Rider J: 25th Anniversary
Kamen Rider Agito: 30th Anniversary
Kamen Rider Kabuto: 35th Anniversary
Kamen Rider Fourze: 40th Anniversary
Kamen Rider Ghost: 45th Anniversary
Kamen Rider Revice: 50th Anniversary
Kamen Rider Myth: 55th Anniversary