Princess Grizbot is a featured article, meaning that it has been considered and chosen by users and contributors to be one of the best articles the True and the Rainbow Kingdom Wiki has.
While singing the song, she plays a pan flute for the first time.
The Colorseum makes an appearance, and later gets damaged.
When Grizelda says "Look, Frookie. Now's our chance.", this may have been a reference to one of her very first lines in "Super Duper Dance Party", in which she says "Here's my chance."
It is shown that Grizelda likes bendy straws with her beverages.
Additional things revealed:
Grizelda sleeps with Frookie, and wears a sleeping mask over her eyes.
The left main door of Grizelda's castle contains a doggy door for Frookie.
Grizelda states she doesn't sit on mushrooms, as she declined to when True, Bartleby, and Zee were having a "sit and think".
While Frookie controls the Grizbot and comes across True, Bartleby, and Grizelda, it dances and moonwalks as a reference to Michael Jackson.
Grizelda appears inside the Wishing Tree for the first time.
She also watches True get her three Wishes for the first time, and calls it "a lot amazing".
True calls on Cumulo twice in one episode for the first time.
Glu-bu is used for the second time.
When Grizelda happily calls Frookie's name after he is removed from Princess Grizbot, the same voice clip is used from when she said his name in "Frookie Sitting", twice.
Beginning with this episode, the outro song is extended by a few seconds.
Farmer Mosser is shown to have a daughter. He is seen holding hands with her right before Grizelda starts her song.
Running jokes
True preparing shape-themed meals for Bartleby (eg. round foods in the afternoon, and square foods for breakfast the next morning)
True referring to the giant robot as the Grizbot, and Grizelda correcting her to say Princess Grizbot.