Gunzookie (Exit the Gungeon)
Walks back and forth, coughing up bubble bullets. These bubble bullets float lazily towards the player until popped, then the bullet inside will launch itself at the player at great speed.
The best strategy to defeat gunzookie is to Kill it before it cough the bubble out. When he cough the bubble shoot it with bouncy_bullets hiding behind the wall, if you don’t have bouncy_bullets simply wait before it crash with the wall.