"In order to open the Pandora Box and release its massive amount of energy capable of destroying the world, a new battle has begun!"
"The Pandora Box, which contains enough energy to destroy the Earth, has finally been opened! Standing up to Evolt, the extraterrestrial life form that has gained its power, are the Kamen Riders!"
—The Opening Narration from episode 36 onward
Now, shall we begin the experiment?
—Series tagline/Sento's pre-transformation catchphrase
The laws of victory have been decided!
—Sento/Build's pre-battle catchphrase
I've got the feeling I can't lose!
—Ryuga/Cross-Z's pre-battle catchphrase
My power is surging, my soul is burning, and my magma is overflowing!
—Cross-Z Magma's catchphrase
I'll let my passion burn and crush you!
—Kazumi/Grease's catchphrase
I have people to save and a country to protect! You will be a sacrifice for the greater good!
—Gentoku/Rogue's last words