Ninja Cat emoticons are coming to Windows 10 Anniversary Update. The character made its debut last year during the launch of Windows 10, and has since morphed into a mascot for the Windows Insiders program.
You'll be able to combine existing emojis for various Ninja Cat poses. From Emojipedia:
Microsoft is set to roll out a new design language for emojis, incorporating a black border around each character. Other tweaks include turning the default skin tone to yellow, but you'll still have access to the five skin tone options that debuted in Windows 10.