Mari Llewellyn is a fitness-influencer turned entrepreneur who built an online following of over 2 million by documenting a 90-pound transformation and mental-health journey.  She co-founded Bloom Nutrition, a wellness-supplement brand now in major retail, and in 2025 launched Pursuit Network, a creator-first media company for wellness and lifestyle voice-talent.  Her trajectory shows how a creator can evolve into founder, community-builder and media-operator.