I've thought that it would be cool to have a Wiki with an entry for each character, describing what it is, and its history. Although that wouldn't help for mystery characters like this one, there are a lot of characters with stories behind them.
https://emojipedia.org/person-in-suit-levitating/
(Edit: Apparently HN automatically removes emoji.)
https://en.wikipedia.org/wiki/Miscellaneous_Technical
Aside from the table describing each symbol, if you scroll to the bottom of the page, it links out to full articles related to each. For a full list see...