Sankaku Channel/

Tucky said:
Looks like the most recent switch was yesterday, it does make more sense as a character than as a copyright based on its wiki page original

"Unlike fan-arts, that use characters from other artists, original characters are creations whose copyright (if applicable) is possessed by the artist itself"

If it is truly an original character (mostly anime based, used for prints and whatnot), use original
If it is an 'original character' (mostly wastern based, like some kind of persona, sonic or comic rip-off, or new species of dragon etc (DA,tumblr tier)) use only original_character