Talk:Chara/@comment-35549737-20171227033611/@comment-32182236-20180110161245

In one of the Undertale trailers, for a short amount of time, "CHARA" was visible as the name. Chara IS the true, canon name.

...Or it was a reference to "Character", and was just used for testing, and Toby added in "The true name" as a joke later on to those clever enough to type in the name found in the trailer.