Kellogg's leverages nostalgia and brand heritage in its OOH campaign featuring Cornelius the Cockerel, an iconic mascot. The creative design by Leo Burnett UK plays on the cropped Kellogg's logo, labeling Cornelius as 'The OG', which resonates with audiences familiar with the brand's history. This approach works by evoking a sense of familiarity and affection, potentially increasing brand loyalty and awareness among consumers who have grown up with Kellogg's products.