The Hamilton star and his dedicated pro partner took home the coveted trophy after a tough season of competition.
In the last night of the finals, Fisher and Arnold beat out Lindsey Stirling and Mark Ballas -- the season's runner-ups -- as well as third place finishers Frankie Muniz and Witney Carson.
The former Disney Channel star and his partner performed two flawless routines -- first a samba, and then a salsa/paso doble fusion -- both of which earned them perfect 30s in the final night of competition.
It was also announced during the show that both Fisher and Muniz will be joining the DWTS winter tour, Dancing with the Stars: Live! - Light Up the Night, alongside their partners and some of the show's most popular pros.