Prompt: Generate an avatar that incorporates the letter Y, the number 2055, and a mountain bike. In the design, integrate the letter Y into the shape of mountains, and incorporate the number 2055 as part of the bicycle wheel, making it look like a natural element of the bike. The overall design should be clean and modern, highlighting these three elements. Note that the silhouette of the mountain bike should complement the shape of the mountains, creating a harmonious composition. Colors and style can be adjusted based on personal preferences to ensure the avatar has a unique personality.