Did Jack find Bod at the end?

Yes. Jack disguised himself as an "innocent" old man, who
was called Mr. Frost. Jack Frost does find Bod, with the help of Bod's old childhood
friend, Scarlett. Although, with the help of the inhabitants of the graveyard, Bod was
able to trick Jack into going inside "The tomb of the Indigo Man" where Bod said that he
was the master of the sleers and a creature appeared with 3 heads of a human being with
a body of a long snake. This creature then ended killing Jack when he threatened the
Sleer's master (Bod) because "WE WILL PROTECT HIM UNTIL THE END OF TIME. THE SLEER WILL
HOLD HIM IN ITS COILS FOREVER AND NEVER LET HIM ENDURE THE DANGERS OF THE
WORLD."