The term 'Belle or Bart' can be solved in four different ways in a crossword puzzle. The first solution is 'Starr' with five letters, which is a reference to the character Starr Manning from the soap opera One Life to Live. The second solution is 'Starrs' with six letters, which is a reference to the character Starr Manning's family name. The third solution is 'Bete' with four letters, which is a reference to the character Bete Noire from the comic book series Fables. Finally, the fourth solution is 'EWE' with three letters, which is a reference to the character EWE from the animated television series Steven Universe.