Monster Fighters are minifigures released in 2012 for the Monster Fighters theme. These are the protagonists of the theme. Each character has some sort of body scar such as a cybernetic arm, leg or eye. The monster fighters include Ann Lee, Dr. Rodney Rathbone, Frank Rock, Jack McHammer and Major Quinton Steele.
- 9461 The Swamp Monster - features Frank Rock
- 9462 Mummy - features Ann Lee
- 9463 The Werewolf - features Major Quinton Steele
- 9464 Vampyre Hearse - features Doctor Rodney Rathbone
- 9465 The Zombies - features Jack McHammer
- 9466 The Crazy Scientist and His Monster - features Doctor Rodney Rathbone and Major Quinton Steele
- 9467 Ghost Train - features Ann Lee and Frank Rock
- 9468 Vampire Castle - features Doctor Rodney Rathbone and Jack McHammer
- Jack McHammer is armed with a hammer identical to Thor's.
- Ann Lee has the Cave Woman's hairpiece.
- Dr. Rodney Rathebone has the Musketeer's Sword.
- Major Quinton Steele is similar to the Explorer from the Minifigures theme, but with a robotic left eye.
- Frank Rock has the Mechanic's hair.
- There are three sets in the theme in which there are no Monster Fighters; 30201 Ghost Polybag, 30200 Zombie Coffin Car, and 10228 Haunted House.