|This article is about a/an set of alternate forms in Kamen Rider Ex-Aid.|
Level 30 (レベル30 Reberu Sātī) 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.
- 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)
- 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.
- Kamen Rider Ex-Aid
- Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider
- Episode 19: A Sudden Fantasy!?
- Episode 20: Take Off Against the Direction of the Wind!
- Episode 21: Chasing the Mystery!
- Episode 22: Engineered History!