Croissant Zub: Like Gradius Zubs, they'll be fought before the boss battle. A lot of them will materialize in random places and then start moving in a straight line, aimed at you. They can be easily destroyed with a shot.
Chris2Balls: Chris will slowly fly around the screen while holding Une and Deux. He can juggle them around and throw them in random places. Thrown Une and Deux will stop in midair and then shoot baguette lasers from their four laser cannons. The only way to defeat Chris isn't to shoot him directly, but rather destroying the spacecrafts, which will kill him too.
Viperjet: Viperjet will come from the right side of the screen, flying in a straight line in high speed. It can be destroyed with a single shot.
Roku: Roku will come from the right side of the screen, with a lot of random computer-related objects spinning around her, acting like a barrier. Shooting at the objects a number of times will destroy them, giving access to her. She'll eventually stop, raise her arms and shoot the objects at the player, becoming more vulnerable. After this she'll flee to the left side, accelerating quickly to avoid being killed.
When killed, the death animation will play and the recycle bin will fall off the screen afterward.