Well, katekyo yaoi manga usually has complex relationship dynamics and focuses on the romantic and emotional aspects. The characters' personalities are often deeply explored.
The story of the robot boy in the cartoon could be anything from his quest for identity to his battles against evil forces. There might be lessons learned and growth throughout the narrative.
You could consider names such as 'Cuddles', 'Whiskers' or 'Bandit'. 'Cuddles' makes it seem friendly. 'Whiskers' highlights a feature. 'Bandit' gives a bit of a wild and adventurous image.
A Billy Joel caricature often exaggerates his facial features, like a prominent nose or big eyes. It might also play up his signature hairstyle or clothing style.
You can start by observing real bugs to understand their shapes and features. Then, simplify and exaggerate those details to give them a cute and cartoonish look. Use bold lines and bright colors for a fun effect.