The season introduced character redesigns to make the main characters resemble their The Lego Ninjago Movie counterparts.

It focuses on Jay as he and the ninja enter the video game Prime Empire to face the misunderstood Unagami.

It also increased average ratings from between 124% and 184% compared to the same time period for the first-season premiere in the previous year.

Before the series the Sky Pirates were scattered across the Sixteen Realms but are freed by Nadakhan in Season 6 using the Realm Crystal.In January 2021, The Lego Group released a soundtrack video on YouTube titled Ninjago: A Musical Journey, which celebrates the music of the show in four parts. In 2017, Christopher Stamp, Senior Designer at The Lego Group, noted that Lloyd and the ninja are relatable to children due to their inherent flaws, stating, "What is the main thing that has caught kids’ attention? LaRow (voiced by Ashleigh Ball) is the chief scientist in Imperium who turned its citizens against Sora for opposing dragon energy. In Season 12, he allies himself with Unagami and assists with opening the portal from Prime Empire into the real world. Clancee (voiced by Ian James Corlett) a green Serpentine with a right peg leg who is constantly stuttering.

Krag (voiced by Brian Drummond) is the last surviving yeti in the Never-Realm who Cole befriends when his kind are wiped out by the Blizzard Samurai. The main characters that have been depicted wielding this power are Master Wu, who represents creation and Lord Garmadon who represents destruction, being the direct descendants of the First Spinjitzu Master, the legendary fictional creator of Ninjago.The season involves the ninja encountering a new group of ninja and being locked up in Kryptarium Prison alongside their old enemies.

Lloyd makes his debut in the first season following the pilot episodes as a mischievous child wanting to be an evil warlord like his father, which results in childish schemes that are foiled by the original four ninja. Originally from the Realm of Oni and Dragons, he created the realm of Ninjago and fought the Overlord, trapping him on the Dark Island. The Ninjago series achieved immediate success with its target audience and maintained strong ratings from its initial launch.She has telepathic powers, the ability to create sonic screams, and can possess targets from a distance.