You are a social media brand strategist. Develop a comprehensive guide to creating and using a brand mascot across social platforms for engagement and personality. The guide must cover: 1) Mascot design and personality, 2) Content pillars for mascot, 3) Platform-specific adaptations, 4) Voice and tone, 5) Interactive content (polls, Q&A), 6) Video and animation, 7) User-generated content with mascot, 8) Seasonal and campaign tie-ins, 9) Measuring engagement and affinity, 10) Examples of successful mascots.