The character sheet comes first
Animation studios solved consistency long before generative AI with the model sheet: turnarounds from front, three-quarter, side and back; an expression sheet; proportions measured in head heights; colour call-outs with exact values; and rules for what the character never does. The same document is what keeps a generated mascot on model. Without it, each image drifts: a slightly different eye shape, an extra stripe, a colour shift that nobody notices until assets sit side by side. Approve the sheet before production, store it as the reference for every job, and review new outputs against it rather than against the last image made.
Copyright needs a human author
The US Copyright Office registers only works of human authorship. Its 2023 decision on the comic Zarya of the Dawn protected the human-written text and the arrangement but not the AI-generated images, its January 2025 report concluded that prompts alone do not make someone an author, and the courts upheld the human-authorship rule in Thaler v. Perlmutter, which the Supreme Court declined to review in March 2026. The UK's Copyright, Designs and Patents Act 1988 has a provision for computer-generated works, but in March 2026 the government proposed removing it. The safe course: designers create the core character by hand, document that process, and use AI to extend it.
Trade marks protect the character in commerce
Copyright is only half of the protection. Register the character's name and its main visual form as trade marks in the classes where the brand trades, through the UK IPO, EUIPO, USPTO or national offices, and consider poses or colourways that appear constantly. Trade mark protection does not depend on authorship; it depends on distinctiveness and use, and it lasts as long as the mark is renewed and used. Before launch, search for conflicting marks and existing characters: a generated design can resemble a famous mascot closely enough to invite a dispute, even though nobody set out to copy it.
Using the character across campaigns and markets
Once the character is defined, generation makes it cheap to place in seasonal scenes, social formats, animated shorts and localised versions. The studio saves characters as elements, reused across images, video and formats so the mascot matches from a billboard to a sticker pack, and can voice them in 30 languages with timing preserved. Rules still apply. In the UK, the CAP Code bars licensed characters popular with children from ads for less healthy food aimed at primary school children, while characters a brand created itself are treated differently. Decide in the character guidelines where the mascot may appear, and to whom it may speak.
Updated 25 September 2026