Level 4

Reberu Fō (レベル4), often abbreviated as LV4, is a type of enhanced fighter form of the Ex-Aid Riders, which is accessed through the use of a special Level 4 Rider Gashat at the same time as their normal Gashat, summoning a Support Robot known as a Gamer and combining with it. Despite not usually looking greatly different from Level 2, Level 4 forms are far superior in base stats.

Level 4 can be accessed by a Level 2 Rider activating the second Gashat, closing the Gamer Driver's cover (as a second Gashat is active, Level 1 is not retaken), inserting the Gashat, and then opening the cover again.

Kamen Riders

 * Kamen Rider Ex-Aid (TBA)
 * JuJu Burger
 * Kamen Rider Brave
 * Night of Safari (Kamen Rider Brave: ~Let's Survive! Revival of the Beast Rider Squad!~)