fictitious character vs fictional character

fictitious character and fictional character both are nouns.

Word	Noun	Adjective	Verb	Adverb
fictitious character	Yes	No	No	No
fictional character	Yes	No	No	No

As nouns, fictitious character and fictional character are synonyms defined as:

fictitious character and fictional character: an imaginary person represented in a work of fiction (play or film or story)

Other synonyms of fictitious character include character.

fictitious character (noun)	fictional character (noun)
an imaginary person represented in a work of fiction (play or film or story)	an imaginary person represented in a work of fiction (play or film or story)