Kamen Rider Ex-Aid levels up to Level 3 by inserting the Gekitotsu Robots Gashat in the second Gamer Driver slot. It summons the Robot Gamer support robot and Ex-Aid combines with it to level up.
Next is Kamen Rider Lazer, in which he inserts the Giri Giri Chambara Gashat in the second Gamer Driver slot, summoning the Chambara Gamer support robot to transform into Lazer Chambara Bike Gamer Level 3! In this form, the once bike Rider gains a humanoid form and is now armed with the dual-mode Gashacon Sparrow (both sickle and arrow mode).
Last but not the least, the identity of the mysterious Kamen Rider Genm is finally revealed. He is Genm Corp. CEO Kuroto Dan! The big question is, why is he helping the Bugsters bring pain and suffering to humanity? What is his true purpose?
[Source: Kamen Rider News (link 2), HeroShock]