**Image 1: Front View**

* **Character:** A pixel-art frog wearing black knitted hat with a flame pattern and sunglasses. The frog is positioned centrally.  The hat's texture should be clearly visible, showing the knit pattern and flame details. Sunglasses should reflect a hint of the neon lights.  The frog's pixel art style should be consistent throughout, with clear, defined pixels.

* **Background:** A dark alleyway, rendered in isometric perspective.  The walls are textured to suggest rough concrete or brick.  Neon signs in various colors (pink, blue, green, purple) are visible, casting a glow on the alley walls and the frog.  The signs could display stylized futuristic text or symbols.  The ground is a dark, slightly reflective surface, possibly wet.  Details like pipes, wires, and ventilation shafts could add to the futuristic, gritty atmosphere.  The perspective should emphasize depth, with elements receding into the background.

* **Lighting:**  The neon signs are the primary light sources, casting a vibrant, contrasting light on the frog and the alley walls.  Shadows should be used to enhance the three-dimensionality of the scene.


**Image 2: Back View**

* **Character:** Same pixel-art frog, but from the back.  The hat and sunglasses are visible, but the frog's features are less detailed.

* **Background:** Similar dark alleyway, but the perspective shows the opposite side of the alley.  Different neon signs and details should be visible to create variation.  The perspective should be consistent with the front view, maintaining the isometric angle.


**Image 3: Side View (Left)**

* **Character:** The frog is shown from the left side, allowing a clear view of its profile and the side of the hat.

* **Background:** The left side of the alleyway is emphasized, showing the texture of the walls and the placement of neon signs.  The perspective should allow a clear view of the alley's depth.


**Image 4: Side View (Right)**

* **Character:** The frog is shown from the right side, mirroring the left side view.

* **Background:** The right side of the alleyway is emphasized, showing different details and neon signs compared to the left side view.  The perspective should maintain consistency with the other images.


**Overall Considerations:**

* **Pixel Art Consistency:** Maintain a consistent pixel art style throughout all four images.  The pixel size should be uniform.

* **Isometric Perspective:**  All four images must adhere strictly to isometric perspective.  This means consistent angles and proportions.

* **Color Palette:**  A dark, muted color palette should be used for the alleyway, contrasting with the bright neon lights.  The frog's colors should be distinct and easily visible against the background.

* **Details:**  Include small details to enhance the scene's realism and atmosphere.  These could include reflections on wet surfaces, subtle shadows, and variations in the neon light colors.

* **File Format:**  The images should be generated in a high-resolution format suitable for game development (e.g., PNG).