Should I use AI to generate character sheets or make them manually?

Use AI to generate your character sheets — but only through a tool that analyzes your full script first and holds persistent context. In a documented head-to-head test, sheets built from a script context library needed fewer iterations and stayed story-accurate, while sheets from a context-free tool contained different characters than the reference images they were built from.

The deciding factor is not AI versus manual — it's whether the AI holds persistent story context before it generates anything. invideo is an agentic video creation tool with all the current models available, and before generating a single image the invideo agent scans your script and builds a context library — characters, locations, themes, plot points — that every later step inherits. Character sheets generated from that library took far fewer iterations and stayed story-accurate in a documented test, and the invideo agent produced prop and wardrobe variations for later scenes without being asked. It also analyzed each Nano Banana image generation and automatically re-ran any render that looked off with a prompt adjustment, so the sheets arrived corrected rather than needing manual redo rounds.

AI-generated sheets hurt you when the tool skips that context step. The same test — which spent thousands of credits across two agentic tools — found that a context-free tool produced character sheets containing different characters than the original reference images they were supposed to be built from, locked those references and moved on before they could be reviewed, and had to be re-told model preferences at every step. Sheets generated that way inject inconsistency into every downstream shot instead of preventing it.

Manual work still belongs in the pipeline — as input, not as the whole job. Consistency in the documented test came down to two things: the context library and good reference images. So supply your own references (photos, drawn designs, existing stills), then let the invideo agent expand them into full sheets with multi-angle views and scene-specific wardrobe variants. Making every sheet fully by hand costs you the automatic quality control and the variant coverage, and gives you nothing the hybrid route doesn't.

Before trusting any AI sheet generator, check four things: it builds a persistent asset library from your script before generating; it produces multi-angle views plus wardrobe and prop variants for later scenes, not just an initial look; it lets you review and approve references before locking them; and its correction rounds decrease over the project rather than increase.

Once a sheet is approved, use its images as start frames for video generation — a start frame anchor measurably improves character consistency and facial expression quality, and in the documented comparison the context-library approach used fewer video generations and fewer credits for the same scene. From there the invideo agent routes each shot to the right model: Kling 3.0 for expression-heavy character performance, Seedance 2.0 multi-shot for dialogue scenes that need consistency across cuts.

Watch some of these to see what works for you:

I never had one issue with the character or location inconsistency. And again, I think that comes down to having an amazing context library and good reference images.

— the filmmaker who ran the documented agent comparison test