Prompt: a flat design character, sideways, white background, full body of Mike comes across as a friendly, appreciative, and diligent individual. Here's a characterization for the design: Warm and friendly facial expressions. The hair color, which may be dark brown or black, gives a firm and earthy impression. Casual and comfortable clothing, reflecting a friendly and down-to-earth personality. Maybe a t-shirt or casual shirt. Balanced skin color, reflecting diversity. Looks young, maybe between 20 to 25 years old. Jeans or casual trousers that suit a relaxed style. Comfortable and casual shoes, suitable for a relaxed atmosphere. A face with understated features shows a down-to-earth and sociable personality. Mike's character design should reflect a warm, down-to-earth, and friendly personality. Neat hair and casual clothes will create the impression that he is someone who is approachable and reliable.