Ended up adding a whole lot of characters from my favourite childhood cartoons. The three of these turned out to be my favourite. Thought I may as well share them!
unzip the .bin file into "C:\Users\Username\Documents\My Games\XCOM2\XComGame\CharacterPool\Importable@
unzip the .bin file into "C:\Users\Username\Documents\My Games\XCOM2\XComGame\CharacterPool\Importable@