Amide is an enemy from Darius and Darius II.
Details
Amides appear as flying ships. They come in formations from the right of the screen, either on the upper or bottom portion, moving forward then back to the opposite direction and forward again, in a "Z" like pattern. They're tougher than most regular enemies, being able to sustain a few shots.
Darius II features a red variant in the first stage which uses a different pattern, hopping on the ground then doing a high jump while shooting at the player.
Trivia
- Curiously, the Amide artwork from Darius looks very different from its sprite. While the artwork shows it from a side view perspective, the sprite uses a top view perspective.