Forbidden Power missions are spawned on the map by the zap of Monstrox. See what happens when the knights take on Cosmic. Before starting the mission try out different Combo NEXO Powers to find the perfect one that can counter these Cosmic attacks.

Robin wants to join the NEXO KNIGHTS heroes in battle, but he is too small. Robin starts developing extra legs to make him taller and ends up developing the powerful Ultra Armor. The knights use the ultra armor to defeat the monsters even more easily than before. All cheer Robin's great idea.

The Book of Monsters catching a cold means trouble for the NEXO KNIGHTS when he can create an entirely new kind of “snotty” monster.

Power up with The Axe of Merlok and defeat your foes! When Macy is surrounded on all sides by bad guys, she summons the awesome power of the The Axe of Merlok! Watch as 5 spinning axes fall from the sky – 3 from the left, and 2 from the right, and each axe deals area-of-effect damage upon landing. Take a ‘byte’ out of the evil tech infectious bad guys and team up with the NEXO KNIGHTS™ team!

Macy is leading the charge into battle! To conquer evil she powers up with The Staff of Merlok! This Merlok Power generates Merlok’s staff which descends from the sky in golden light. Enemies are blinded, and when the staff hits the ground, it sends a wave of force all around that pushes back enemies around the edge of the screen. For 10 seconds the staff sends golden energy toward the nearest enemy. If an enemy is defeated this way, the knight regains 10% of their total HP.

The Knights are tasked with protecting the King’s valuable Ned Knights comic book during the Bookingheim Knight-a-Con. But with all the costumed kids there, will they recognize the real Jestro and Book of Monsters coming to get them?

In a massive chase around Knighton, the NEXO KNIGHTS attempt to keep the Book of Betrayal out of the Book of Monster’s grip. But the evil book is persistent. Will he get the final piece of his evil puzzle?

Axl is the biggest NEXO KNIGHTS™ hero in the kingdom, but even he needs to power up to defeat evil! When he needs that extra charge on the battlefield, Axl summons The Hammer of Merlok. With this Merlok Power, a giant electric charged hammer falls from the sky in the middle of the screen, flattening enemies, and discharging a wave of golden electrical energy every 3 seconds that damages and paralyzes enemies!

The Book of Betrayal leads Jestro and his Monsters to Funnyton – the funnies town in the kingdom. When the Knights arrive to capture him, they discover (to their shock) that Jestro and the Book of Monsters are now the town’s top comedians!

Clay takes a walk in the forest. Monsters follow him. He thinks back to when he was young and started dreaming of becoming a knight and did his first heroic act. The monsters attack him, but he thwarts their attack and defeats them easily. Macy and Aaron are mad he got in a fight without them.