Mech Girl

The first step is creating clean anchor images for both the protagonist and the mech. These define identity, materials, silhouette, and tone for everything that follows.

The first pass was done in GPT Image 2 to establish the girl's post-apocalyptic look and the mech's friendly rounded design.

These images serve as anchor references — not final production assets, but the visual DNA of the project.

Rough concept images are converted into cleaner, production-ready reference sheets using a reusable PDF prompt template.

The same character_reference_sheet_prompt.pdf is reused for both the girl and the mech to maintain identity consistency.

Before generating video, combine both reference sheets into a single scale image so the size relationship between girl and mech is locked.

This prevents scaling issues in later shots and makes it easy to verify proportions at a glance.

Using the two reference sheets and scale image as a three-image input set, generate two different 15-second variations.

Prompts are designed to preserve character identity, mech design, and scale relationship across all shots.

The second pass explores stronger actions and ending options without restarting the asset pipeline.