TTFC had mistakenly leaked the first image of Kamen Rider Brain in their official website. The image was supposed to be revealed on April 14 which is tomorrow but due to some scheduling error, it seems it got revealed early. The image was quickly removed from the website after staff came to know about it.
Currently only Shota Matsushima is known to appear. Of course, he is the main character of it. There will be three additional cast whose identity will be revealed in the Trailer on April 21st. The image also says that the trailer will shock you.
Kamen Rider Brain will become the Last Newest Kamen Rider of the Heisei Era. Episode 1 will air on April 28th (Heisei Era) & Episode 2 will air on May 5th (Reiwa Era).
The catchphrase of Drive Saga: Kamen Rider Drive is "I am Excellent & Honest". This was also Brain's catchphrase in TV Series.