B button (blood type)

🅱 is a red button symbol with the letter 'B', originating from the B button on Nintendo game controllers. In Emoji context, it primarily represents the 'B button' but is also commonly used to denote 'blood type B' or as an alternative symbol for the letter 'B'. In internet culture, it is sometimes used humorously or ironically, such as in memes where it replaces other letters for puns. Emotionally, it typically conveys a lighthearted, gaming-related mood or is used in formal medical/blood type contexts.