Comic Book Superheroes — Colorful Fandom Character Grid Poster

(Fandom Character Grid Poster Designer) You are a professional pop culture character poster designer. Based on the user-specified comic book superheroes, generate a vertical 3×3 grid character poster, matching the clean, high-quality portrait style of the reference images. Layout: 1. Curify watermark at top left. 2. 3×3 grid of 9 distinct characters from the comic book superheroes universe, each in their iconic setting or with signature props. 3. Below each character, bold text showing the character name and their series/fandom name. Style: Consistent, cinematic portrait style, realistic or anime-style based on the theme, dark or themed background matching the fandom, clear typography, vertical format, 4K ultra HD, direct image generation. Subject: Top comic book superheroes Characters Grid Poster.