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“I know a guy who'd be perfect for the job! General Magmar. He was Monstrox's right-hand man. Take-charge kinda guy.”
— The Book of Monsters to Jestro in "Greed is Good?"

Mayor Magmar, formerly General Magmar and the Sultan of Siege is a Lava Monster and the mayor of Burningham, which he founded. He was originally Monstrox's right hand man and rides the Siege Tower.


Prior to the series

Magmar was Monstrox' right-hand man, and he and his six brothers were known as the Seven Scourges.[1] Eventually, he was banished by Merlok and trapped in one of twelve evil books.

Official descriptions

When you want to conquer the world with an army of monsters, you need a good general to command them. General Magmar is the greatest strategist, warrior and cook the Book of Monsters has ever produced. He talks in big words and fights the big fights. Too bad he rarely wins...

The Book of Monsters

You want to rule the world with a monster army? You need an amazing general. Magmar's the greatest military strategist and warrior I've ever seen! Fierce. Powerful. And maybe a bit fancy? He uses big words and educated -sounding stuff - like an artist or philosopher. Most monsters? They growl a lot. Magmar? He enunciates excessively. I don't even know what he's talking about half the time. Still, he gets the job done a lot better than those other bottom-scratching lava brutes. Plus he's an amazing cook! You have just GOT to try his Magma Chip Cookies.

Character Encyclopedia

Long-Winded Leader

The commander of the Magma Monsters' army is very self-confident. General Magma thinks he is a military genius and master of tactics. Everyone else thinks he should just stop talking quite so much.[1]

Fiery Foe

Ultimate General Magmar is just like the regular general, but even fiercer, with some wicked new weaponry. Oh, and as he can't wait to tell you - with his Ultimate weapons, he is more amazingly great at everything than before.[1]



Nexo Knights

Season 2: Books of Power

Season 3: Storm Over Knighton


  • He was formerly Jestro's chief strategist.
  • In the show, he is practical and overly literal, while in the app, he is very eccentric and a bit crazy.



Promotional media

In Nexo Knights

Season 2: Books of Power


view · talk · edit Characters
Nexo Knights: Merlok 2.0 · Clay Moorington · Lance Richmond · Aaron Fox · Macy Halbert · Axl · Robin Underwood
Allies: Ava Prentis · Jestro · King Halbert · Queen Halbert · Herb Herbertson · Alice Squires
Squirebots: Aaronbot · Axlbots · Chili Vanilla · Claybots · Cowbots · Éclair · Haute FancyPants · Kingbot · Lotta Fun · Lotta Budget · Macybot · Manuel · Persnickety Marge · Riccardo
Merry Mechs: Robot Hoodlum · Dennis · JohnBot
Knights' Academy: Beak · Brutzle · Captain Clash · Chef Munch · Ethan Zilgo · Fletcher Bowman · Griffiths · Izzy Richmond · Knightmares · Ottofae · Relik · Scapeland · Swordmore Brickland
Tighty Knighties: Jorah Tightwad · Shia LaBlade · Jousting Bieber · Brickney Spears · The Blok
Lava Monsters: Mayor Magmar · Beast Master · Lavaria · Whiparella · Moltor · Flama · Burnzie · Sparkks · Bookkeeper · Infernox · Ash Attackers · Crust Smashers · Flame Throwers
Stone Monsters: Monstrox · Stone Colossus · Ruina Stoneheart · Krakenskull · Garg · Roberto Arnoldi · Three Brothers (Roog · Reex · Rumble) · Harpies (Hilda · Ingrid · Ulrika) · Roguls · Gargoyles · Grimrocs · Stone Stompers · Stone Monster · White stone statue · Bedrock Monster
CyberBiters: Monstrox · Dragov · Ruina Stoneheart · Fred · Pola · Cezar · Berserker · MechaByter · MegaByter · VanByter No. 307 · VanByter No. 407 · CyberByters · InfectoByters
Forest Monsters: Mushlord · Baron Badwood · Dame Flora · Bramblina · Loggerhead · Deadwood & Knot · Elm of the Dark Realm
Sea Monsters: Behemoth of Brine · Marquis de Seaweed · Siren · Sharkerado · Mate Squiddybeard · Savage · Poop · Deck
Order of the Eight: Augustin Halbert · Reginald Brickland · Therence Richmond
Other: Aaron's father · Aaron's mother · Arthur Eaglewing · Axlina · Baron von Bludgeoneous · Cheddarton · Chopper · Coughmeyer · Cuthbert Richmond · Dustin Hoffmeier · Edvard Evanson · Gobbleton Rambley · Goldie Richmond · Hadda Hammerin · Jack Shields · Jebediah Hazard · Jestro cosplayer · Jestro cosplayer's grandmother · Jokes Knightly · Jurgen von Stroheim · Lance cosplayer · Mama Axl · Maynard · Mooper · Morty · Ned Knightly · Papa Axl · Princess · Ramsey · Robin's father · Roger the Scrubber · Roger van Nelsing · Royal Soldiers · Slab Rockowski · Trix Taylor · Woody Carverer