They appear as a red semicircle with eyes and spots. Red tentacles are attached to their sides. On their head, they have neon green stripes.
Squids move slowly horizontally. As soon as the player gets in their line of sight, they will fire non-stop bullets vertically. They will stop once the player gets out of their way. They can be destroyed with one bug bullet, or by colliding with the enemy. Collision will cause the loss of one health point. They move slowly compared to other enemies, and often appear in groups of one or two.