On Wikipedia, the enclosed box to the right of lead section text with foundational information about the subject, found on some but not all articles, and most likely if that subject is a proper noun, is called an infobox.
The infobox is a template, with parameters to be filled out (or left blank) as appropriate. For a biography (usually Template:Infobox person) one is likely to find a photo, birth date, occupation, alma mater, and so on.
Wikipedia has hundreds of different infoboxes for virtually every subject Wikipedia covers, with different parameters listed as appropriate. An infobox for the member of a royal family will include information about their family lineage, whereas a politician's entry may not.