VISUAL STORYTELLING

How to Stop AI Character Drift With Nano Banana 2’s Subject Consistency

A step-by-step guide to casting consistent characters across every blog post, story, and visual series.

If that looks familiar, you are not alone. The same prompt, the same character, and yet a completely different person stares back at you every time. It is one of the most frustrating limitations of AI-generated imagery — and until recently, there was no clean solution.

Nano Banana 2 changes that. By the end of this guide you will have a reusable character sheet, a workflow for placing that character in any scene you can imagine, and a master prompt template you can copy directly. Your characters will finally look the same in every image, whether they are sitting in a Parisian café or walking through a rainy park.

Let’s fix it.

What is Subject Consistency?

In the world of AI-generated art, Subject Consistency is the ability of a model to maintain the exact same identity, features, and proportions of a character or object across multiple different images.

Without this feature, an AI might generate a “writer with red hair” differently every time …