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Complete Guide to Using Gemini Omni Character

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Overview

Create a reusable Character with a single reference image, a description, and optional voices. Returns synchronously with a characterId you can reference in Gemini Omni Video generations.

Input Parameters

Reference Image
filerequired

One reference image ≤20MB. JPEG, PNG, or WebP.

Character Description
textarearequired

Character description (max 20000 chars).

Character Name (optional)
text

Optional name (max 100 chars).

Voices (optional)
multi-select

Up to 3 Gemini voices to bind to this character at creation time.

Options
AchernarAchirdAlgenibAlgiebaAlnilamAoedeAutonoeCallirrhoeCharonDespinaEnceladusErinomeFenrirGacruxIapetusKoreLaomedeiaLedaOrusPuckPulcherrimaRasalgethiSadachbiaSadaltagerSchedarSulafatUmbrielVindemiatrixZephyrZubenelgenubi