Audience asks whether heroes have special requirements and whether Julik provides generators for hero migrations. Julik: the hero is just an Active Record — no constraints beyond a DB uniqueness constraint on (hero_type, hero_id, workflow_type) used to enforce 'only one billing workflow per user'. Geneva Drive ships an install generator that creates its own migrations and adapts to big-int vs UUID primary keys; no changes are needed on the application's other tables.