Develop a distinct brand character system with dynamic persona backstories, visual identities and creative usage guidelines that can consistently convey our <product/service> brand across content and experiential touchpoints. First, generate 3-5 unique character personas that appeal to <target audience/customers> and embody our brand archetype, personality traits and values. For each character, include detailed backstories, visual designs, audible voices/accents, signature catchphrases and more. Map out key personality attributes like behaviours, interests, relationships and purpose/missions. Then produce comprehensive character usage guidelines outlining rules of engagement, graphical language systems, creative storytelling/narrative frameworks and more. Ideate how these characters can manifest across content, campaigns, voice assistants, metaverse experiences and more.