User:OverlordBaron/Sandbox/Secondary vs Tertiary

In the Heisei era run of Kamen Rider, it is common to feature rivalry between riders. Primary vs Secondary Riders are the most common (Faiz/Kaixa, Decade/Diend, Gaim/Baron), as well as Primary vs Tertiary Riders (Agito/Gills, Blade/Chalice, Kiva/Saga)

However starting with Kamen Rider Drive, featured the conflict and rivalry between Mach & Chase. Although conflicts between the Secondary and Teriary Riders have happened before Drive (Knight/Zolda, Garren/Chalice), following Drive, the later seasons in the Heisei Phase 2 era features a continuous trend of tension between the series' Secondary and Tertiary Riders before becoming comrades.

Go Shijima & Chase
Go Shijima (Kamen Rider Mach) previously had immense hatred for the Roidmudes, even Chase (Kamen Rider Chaser), despite the android's return to his original heroic personality. This hostility ended after Chase sacrificed himself at an attempt to stop Gold Drive, with Go finally acknowledging Chase as a comrade and avenged his death as Chaser Mach.

Makoto Fukami & Alain
Makoto Fukami (Kamen Rider Specter) was previously friends with Alain (Kamen Rider Necrom) in the Gamma World. After Makoto joined the Daitenku Temple to fight the Gamma, Alain took it himself to become Kamen Rider Necrom and fought against his former friend as a means to forcibly bring him back to the Gamma World. Their clashing ended after Alain's banishment and he eventually rekindled his friendship with Makoto.

Hiiro Kagami & Taiga Hanaya
Hiiro Kagami (Kamen Rider Brave) initially had a grudge against Taiga Hanaya (Kamen Rider Snipe) being the one responsible for the death of his girlfriend. After Taiga was badly injured by Graphite. Hiiro decide to save him, forfeiting the chance to save Saki, rekindling their comradeship and ending their grudge to one another.

Ryuga Banjo & Kazumi Sawatari
Ryuga Banjo (Kamen Rider Cross-Z) and Kazumi Sawatari (Kamen Rider Grease) didn't get along at first and started off as enemies during the Touto-Hokuto war. After Kazumi joined Team Build to fight against Seito, the two soon became friends. Kazumi is the only rider to call Ryuga Banjo by his first name while everyone else calls him by his last name.

Geiz Myokoin & Black Woz
Geiz Myokoin (Kamen Rider Geiz) and Black Woz (Kamen Rider Woz) were previously "old friends" in the Resistance before the latter betrayed them and joined Oma Zi-O. Both have an uneasy relationship because of this, but would later put aside their differences and reconcile after some instigation from Sougo Tokiwa.