Ubuntu 18.04 LTS features a new set of shiny color emoji. If you don’t want to see emoji in messaging apps, on the web, and elsewhere, you can remove them from your system.
To open the emoji panel on Ubuntu 18.04, press Ctrl+. or Ctrl+; in almost any app. The included emoji are based on Google’s Noto Color Emoji font, which is used on Android devices like Google’s own Pixel phones.