Lithuania, Sealand, Iceland -Axis Powers Hetalia: Go for it. It's not like they can really be spoiled for history.
Bernkastel -Umineko: Has a very flexible fourth wall especially with witches. Go for it.
Hilda -Pokemon Black: Sure.
Kanji Tatsumi - Persona 4: Sure.
Madeline - Madeline: Sure.
They'll probably just think "in that world there are fictional representations of me" rather than "therefore I am fictional", so I have no problem with it!
no subject
Bernkastel -Umineko: Has a very flexible fourth wall especially with witches. Go for it.
Hilda -Pokemon Black: Sure.
Kanji Tatsumi - Persona 4: Sure.
Madeline - Madeline: Sure.
They'll probably just think "in that world there are fictional representations of me" rather than "therefore I am fictional", so I have no problem with it!