Level 30

is a level stage exclusive to the Bugsters. A total of four Bugsters initially emerged as Level 30, each having been born from the data of one of the five Gashats classed as Level 3; exempt from this was the unique Poppy Pipopapo of DoReMiFa Beat. After being pacified, these Bugsters advanced to Level 40 and re-emerged before joining Kamen Rider Chronicle. 
==Users==
===Bugsters===
*Gatton of Gekitotsu Robots (Ex-Aid Episodes 19)
*Vernier of Jet Combat (Ex-Aid Episodes 20)
*Kaiden of Giri Giri Chambara (Ex-Aid Episodes 21)
*Charlie of Shakariki Sports (Ex-Aid Episodes 22)
KREA-Gatton Bugsterl30.png|Gatton Bugster Level 30
KREA-Vernier Bugsterl30.png|Vernier Bugster Level 30
KREA-Kaiden Bugsterl30.png|Kaiden Bugster Level 30
KREA-Charlie Bugsterl30.png|Charlie Bugster Level 30
==Notes==
*Level 20/30/40 Bugsters fusing with their hosts are similar to Fusion Roidmudes from Kamen Rider Drive.
**However, their behavior appears to resemble the Gamma Eyecons from Kamen Rider Ghost in that they possess their human hosts and control them from the inside.
**Once the Level 20/30/40 Bugsters are destroyed, the host body returns to normal similar to defeating Bugster Unions earlier in the season and the Memory Break concept in Kamen Rider W.
*Of the four Level 30 Bugsters, Gatton is the only one to have fought his Level 3 Rider counterpart; in his case, Ex-Aid Robot Action Gamer.
**Vernier Bugster - Snipe Combat Shooting Gamer
**Kaiden Bugster - Lazer Chambara Bike Gamer
**Charlie Bugster - Genm Sports Action Gamer
==Appearances==
* Kamen Rider Ex-Aid
** Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Riders
**Episode 19: A Sudden Fantasy!?
**Episode 20: Take Off Against the Direction of the Wind!
**Episode 21: Chasing the Mystery!
**Episode 22: Engineered History!