Suggestions by @dandandandandan

Sonic the Hedgehog

as Blue in Fictional Characters by Colours of the Rainbow

Score: +3

Jack Skellington

as Christmas in Fictional Characters Sorted by Hyperfixations, Obsessions and Interests

Score: +2

Luna Loud

as Guitar in Fictional Characters Sorted by Hyperfixations, Obsessions and Interests

Score: +1

Rosita

as Guitar in Fictional Characters Sorted by Hyperfixations, Obsessions and Interests

Score: +2

Lucy Loud

as The Supernatural in Fictional Characters Sorted by Hyperfixations, Obsessions and Interests

Score: +2

Edna Mode

as Fashion in Fictional Characters Sorted by Hyperfixations, Obsessions and Interests

Score: +2

Two-Face (Harvey Dent)

as Melting Man in Nightmare Before Christmas (with Batman characters)

Score: +1

Ventriloquist

as Mr. Hyde in Nightmare Before Christmas (with Batman characters)

Score: +1

Dee Dee Twins

as Witches in Nightmare Before Christmas (with Batman characters)

Score: +1

Enchantress (DC Comics)

as Shock in Nightmare Before Christmas (with Batman characters)

Score: +1

Deadshot (Floyd Lawton)

as Lock in Nightmare Before Christmas (with Batman characters)

Score: +2

Captain Boomerang

as Barrel in Nightmare Before Christmas (with Batman characters)

Score: +2

Solomon Grundy

as Behemoth in Nightmare Before Christmas (with Batman characters)

Score: +1

Scarecrow

as Oogie Boogie in Nightmare Before Christmas (with Batman characters)

Score: +2

Batman

as Santa in Nightmare Before Christmas (with Batman characters)

Score: +1

Dr. Hugo Strange

as Dr. Finklestein in Nightmare Before Christmas (with Batman characters)

Score: +1

🐊Killer Croc🐊

as Wolfman in Nightmare Before Christmas (with Batman characters)

Score: +1

The Batman Who Laughs

as Sandy Claws in Nightmare Before Christmas (with Batman characters)

Score: +1

The Penguin (Oswald Cobblepot)

as Mayor in Nightmare Before Christmas (with Batman characters)

Score: +2