Watch Order
0 / 7 watchedAll six seasons in air order, then the finale films.
Finales
About Billy and Mandy
The Grim Adventures of Billy and Mandy follows dim Billy and ruthless Mandy enslaving the Grim Reaper after winning a limbo bet. The run spans six seasons and 77 episodes from 2001 to 2007, closing with the Big Boogey Adventure and Wrath of the Spider Queen films.
Watch seasons one through six in air order, then the two films. The show is episodic with running lore, so order carries introductions and the Underfist spin-off setup more than week to week plots. The films were made as the finale, which is why they sit last despite airing inside the final year.
Good to know
The Underfist Halloween special works as an epilogue for viewers who finish the run wanting one more adventure with the gang. A proposed solo spin-off never materialized beyond it. No revival is in production, so the six seasons plus both TV films are the complete Underworld file for fans to enjoy today.
