The objective of this research is to analyze the characters, and moral values in "Fablehaven: Keys To The Demon Prison" by Brandon Mull. The approach of this research is qualitative research. The method of this research is content analysis. The writer uses novel as the source of data. The findings reveal that in "Fablehaven: Keys To The Demon Prison, the characters are distributed as follows: protagonist (40%), antagonist (20%), and tritagonist character (40%). The identified moral values include honesty (16.13%), bravery (12.90%), humbleness (9.68%), steadfastness (9.68%), cooperativeness (9.68%), kind-heartedness (9.68%), sympathetic to others (6.45%), thankfulness (6.45%), trustworthiness (6.45%), sincerity (6.45%), and love and affection (6.45%). The result of the analysis indicates that protagonist and tritagonist character stand out as dominant characters, and honesty emerges as the predominant moral value throughout the narrative.